You need a C ++ book that focuses on 17

I am looking for a book (or even a web-based course or an interactive tutorial, but ideally a book) that teaches C ++ 17. My normal approach of "learning by doing and Google" does not work, it is obvious that I need a more structured one. Formal approach to this Specifically, a book that:

  • Teach C ++ assuming v17, and do not worry about giving the reader a historical journey on how to do something in previous versions, or any knowledge on how to work on an "inherited" project. I really just want 17 and on, mainly to minimize the considerable learning curve inherent in C ++, and maximize productivity and security. (Speaking relatively, of course, knowing that none of those attributes are the strengths of C ++ in absolutely modern terms compared to other languages).
  • He is highly opinionated. This minimally focuses only on what the author considers "best practice" solutions to some of the more universal problems that the system's utility programs tend to solve over and over again, instead of teaching all possible approaches to a problem. . (If your ideas are subjectively "best practices" or not, it's not really the important thing). C ++ is quite overwhelming with possible approaches. You may only use 1% of your language capabilities and functions, and that's all I have the bandwidth or even the ability to learn and use. (Unfortunately, the exact 1% I need can not be known now, or I would iterate!) If I learn a suboptimal approach among the 50 possible ones, the negative consequences are minimal.
    • I understand that there are languages ​​with "opinions" incorporated in them, such as Go. But I am no longer in the "language choice" phase.
  • It is known within the community that at least it is not a theft of horribly written money. It seems that there are many of those. Sand traps everywhere!

There are so many books. Tyranny of choice. I've spent hours touring Amazon, the web search and the StackExchange family of sites, but the books seem nonexistent, that:

  • Do not assume baseline competition in previous versions of C ++
  • They are not just a "tour" of news to 17.
  • Focus on teaching the excellent new features of 17, excluding historical expressions that do similar things. (I know that the superposition of the new: the old functionality is rarely 1: 1).

So, I guess the real question is not which exact book meets those needs, but at least it comes close and you know it's not horrible. I also understand that there is no ideal approach / pattern / language / toolkit for each or even for a problem; again, I'm fine with just learning a sub-optimal subset.

This response is excellent (if it is too exhaustive), but it is only for C ++ in general, and it does not focus on "opinion" either.


This is the end of the question, but if the additional information helps, here is my relevant background:

  • A long time ago I programmed in C, both as a hobby and in a small capacity professionally. But I have forgotten almost everything, in particular the syntax, symbols and idioms, possibly debatable. (Less general concepts, such as raw memory pointers, stack / stack, etc. Most of them are still with me, just like general programming and OO concepts). I think the syntax based on C ++ symbols is especially inscrutable and confusing. C ++ 17 seems to get a little worse (or better), so I want to avoid learning an unnecessary "inherited" syntax. (But my use of negative adjectives should not be interpreted as an unwillingness to learn symbols and syntax, quite the opposite!)
  • Although it is a slight compliment, it could be said that I am at an advanced level of professional competence in Visual Basic / VBA legacy, Bash scripts and CMD scripts. Advanced SQL. You can and have done the work in C #, Python, Java and JavaScript. I have also used Perl, Pascal and Fortran, which are mainly included to give you an idea of ​​how old I am. (However, it's not old.)
  • I have not programmed professionally in many years, but I am responsible for understanding web applications based on full stack nodejs. But almost daily "program" at least in Bash, in the way structured and idiomatic that language allows, including the resolution of problems that should never have addressed. (But it's the complete tour after all!)
  • I think better in terms of classes (favoring interfaces over inheritance). I am still struggling from time to time with the prototype / object model of Javascript.
  • I understand and appreciate that the typing of ducks and generics are the future, and I can deal with that, but strong and explicit typing is my comforting food. (As are the private members and immutability.)
  • I understand lambdas, anonymous and similar functions, when I stop to think about it, but I often struggle with real-world applications and almost never use them. While I do not need to learn them better, it would be good, it seems that I could benefit from its use.

Current / evolving environment:

  • Currently g ++ 7.4.0, but can change to any version or necessary version.
  • Mainly, Linux CLI, with occasional ports to Windows CLI and MacOS / Darwin CLI.
  • Currently it favors the Visual Studio code with the popular C ++ extensions. (I'm comfortable with Sublime too.)
  • CMake (fighting!)
  • There is no FLOSS C ++ code yet, but we will use Git public repositories in the future.

There are many reasons for my choice to move to C ++. But being the best tool for the problems that I am currently solving is do not one of them. Let's say it is not the most rational or necessarily the best option, but a thoroughly researched and well-thought-out option, nonetheless. (This is not a question about "what is the best language to solve the XYZ problem", that decision has already been made.) In short, I have considered that it is possibly the least evil solution and in only one language. To the next 5-10 years of problems to be solved on the horizon. But most importantly, I've always wanted to "be" reasonably proficient in that, like my own private badge of honor.

Thanks in advance!

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Windows Application – Windows 10 19H1, 18362.263 (AIO 64in2) July 17, 2019 | NulledTeam UnderGround

File size: 2.9 / 4.0 GB

Outdoor

General information:

• Program version: 18362.263
• Languages: English, Russian
• Required Activation!
• Architecture: x86 – x64
• File size: 6.9 GB

System Requirements:
• Processor: 1.4 gigahertz (GHz) or more.
• Hard disk space: 20 gigabytes (GB).
• Graphics adapter: Microsoft DirectX 9 or newer graphics device.
• Additional requirements for the use of certain features.
• To use the tactile capabilities, a tablet or monitor with support for multi-touch technology is required.
• To access the Windows Store to download and start applications, you need an active Internet connection and a screen resolution of at least 1024 x 768 pixels.

Description:
The assembly is done on the basis of the original UUP files in English. The language was integrated: Russian, integrated updates on July 17, 2019, and .Net Framework 3.5 (including 2.0 and 3.0) was also included. The system is completely in the original installer.

Editions included:
• Windows 10 Home – English
• Windows 10 Home N – English
• Windows 10 Pro – English
• Windows 10 Pro N – English
• Windows 10 Home Single Language – English
• Windows 10 Enterprise N – English
• Windows 10 Pro Education – English
• Windows 10 Pro Education N – English
• Windows 10 Pro for work stations – English
• Windows 10 Pro N for workstations – English
• Windows 10 Education – English
• Windows 10 Education N – English
• Windows 10 Pro Single Language – English
• Windows 10 Enterprise for remote sessions – English
• Windows 10 IoT Enterprise – English
• Windows 10 Enterprise – English

• Windows 10 Home – Russian
• Windows 10 Home N – Russian
• Windows 10 Pro – Russian
• Windows 10 Pro N – Russian
• Windows 10 Home Single Language – Russian
• Windows 10 Enterprise N – Russian
• Windows 10 Pro Education – Russian
• Windows 10 Pro Education N – Russian
• Windows 10 Pro for workstations – Russian
• Windows 10 Pro N for workstations – Russian
• Windows 10 Education – Russian
• Windows 10 Education N – Russian
• Windows 10 Pro Single Language – Russian
• Windows 10 Enterprise for remote sessions – Russian
• Windows 10 IoT Enterprise – Russian
• Windows 10 Enterprise – Russian

WHAT'S NEW
July 17, 2019-KB4505903 (OS Build 18362.263)

• Fixed an issue where the dragging of the emoji and the dictation panel was unexpectedly slow.
• If the taskbar was set to hide automatically, when you start the Start menu, the taskbar will be hidden before invoking the start menu.

HOMEPAGE

x86

x64

programming challenge – Problem nº 17 of the Euler Project, counting of letters of numbers, in Python

Problem statement: if the numbers from 1 to 5 are written in words: one, two, three, four, five, then there are 3 + 3 + 5 + 4 + 4 = 19 letters used in total.

If all numbers from 1 to 1000 (thousand) inclusive were written in words, how many letters would be used?

NOTE: Do not count spaces or hyphens. For example, 342 (three hundred and forty two) contains 23 letters and 115 (one hundred and fifteen) contains 20 letters. The use of "and" when writing numbers complies with British usage. Here is my implementation in Python, waiting for your comments.

def number_to_word (n):
"" "Suppose it is an integer from 1 to 1000.
Returns the number in ex words: 122 -> one hundred and twenty-two. "" "
# num_to_alpha contains the unique values ​​for the numbers that will be returned according to repetitive patterns
num_to_alpha = 
{1: & # 39 ;, 2: & # 39 ;, 3: & # 39 ;, 4: & # 39 ;, 5, & # 39 ; five & # 39 ;, 6: & # 39 ;, 7: & # 39 ;, 8: & # 39 ;, 9: & # 39; nine & # 39 ;, 10: & # 39; ten & # 39 ;,
11: & # 39 ;, 12: & # 39 ;, 13: & # 39 ;, thirteen & # 39 ;, 14: & # 39; fourteen & # 39 ;, 15: & # 39; fifteen & # 39 ;, 16: & # 39; sixteen & # 39 ;, 17: & # 39; seventeen & # 39 ;,
18: & # 39; eighteen & # 39 ;, 19: & # 39; nineteen & # 39 ;, 20: & # 39 ;, 30: & # 39; thirty & # 39 ;, 40: & # 39; forty & # 39 ;, 50: & # 39; fifty & # 39 ;, 60: & # 39; sixty & # 39 ;,
70: & # 39; seventy & # 39 ;, 80: & # 39 ;, eighty & # 39 ;, 90: & # 39; ninety & # 39 ;, 100: & # 39; one hundred & # 39 ;, 1000: & # 39; thousand & # 39;}
# Numbers under 21, 100, 1000 are unique words (can not be formed using a repetitive rule)
if 0 <n <21 or n == 100 or n == 1000:
returns num_to_alpha[n]
    mod = n% 10
# Numbers in the range (21 - 99) have a single rule, except multiples of 10 (formed by a single word)
yes 20 <n <100:
yes n% 10! = 0:
returns f & # 39; {num_to_alpha[n // 10 * 10]} - {num_to_alpha[mod]} & # 39;
returns num_to_alpha[n]
    # Numbers above 100 have a single rule, except the following:
yes 100 <n < 1000:
        # a) multiples of 100
        if n % 100 == 0:
            return f'{num_to_alpha[n // 100]} hundred'
        # b) numbers whose last 2 digits are above 20 and are also multiples of 10
        if not n % 100 == 0 and n % 100 > 20 and n% 10 == 0:
returns f & # 39; {num_to_alpha[n // 100]} one hundred and {num_to_alpha[n % 100]} & # 39;
# c) numbers whose last 2 digits are below 20 and not multiples of 10
yes n% 100 < 21:
            second_part = num_to_alpha[n % 100]
            return f'{num_to_alpha[n // 100]} hundred and {second_part}'
        # d) numbers whose last 2 digits are above 20 and not multiples of 10
        if n % 100 > twenty:
returns f & # 39; {num_to_alpha[n // 100]} one hundred and {num_to_alpha[((n % 100) // 10) * 10]} - & # 39; 
f & # 39; {num_to_alpha[(n % 100) % 10]} & # 39;
# To avoid counting false values
without <= 0 or n > 1000:
come back & # 39; & # 39;


def account ():
"" "Clean spaces and hyphens numbers and count returns." ""
all_numbers = [number_to_word(x) for x in range(1, 1001)]
    numbers_without_spaces = [number.replace(' ', '') for number in all_numbers]
    clean_numbers = [number.replace('-', '') for number in numbers_without_spaces]
    total = 0
for clean_number in clean_numbers:
total + = len (clean_number)
total return


yes __name__ == & # 39; __ main __ & # 39;
print (count ())

Problem with the images of the Magento product 1.7

Mage_Catalog_Block_Product_View_Media :: isGalleryImageVisible It is a method in 1.9.1 and later.

You have probably used the gallery add-on to be compatible with Magento 1.9.1 and it is currently in Magento 1.7.

in your topic file: app / design / frontend / YOUR_THEME / default / template / catalog / product / view / media.phtml comment on the condition where isGalleryImageVisible The method is calling. Something like this:

    getGalleryImages () as $ _image):?>
        isGalleryImageVisible ($ _ image)):?>
<img id = "image-"
class = "gallery-image"
src = "http://magento.stackexchange.com/getGalleryImageUrl ($ _ image); ?> "
data-zoom-image = "getGalleryImageUrl ($ _ image); ?> "/>
        
    

This function would call twice in the same file, be sure to delete both.

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Why can the Canon focus distance macro of 17 cm, while the focus distance of 16 cm is not macro?

The original definition of "macro" is that the image in the movie is at least as large as the object actually. With the amount of small sensor cameras around, that definition is of dubious utility. More relevant would be an "effective" macro where the area of ​​the image is not larger than 24 mm × 36 mm, the image area of ​​a 35 mm analog camera (or "full-frame" digital camera), regardless of size real sensor I'm not sure, but I do not think that definition is really being used.

Instead, "macro" is used for a close-up range of zoom lenses (in compact or ILC) where the possible magnification of the object in the lens is maximized. large The end of a zoom lens due to the minimum focus distance, decreasing more than the angle of view, increases when zoomed. outside. This close-up mode has the cost of extreme perspective distortion (sometimes needed to emphasize an object in a miniature representation of its surroundings) and a very close focusing distance that often causes problems with the shadow of the lens .

Close-up lenses or screw-on diopters (achromatic for best quality) can be used to change the maximum magnification from the wide end to the telephoto end of a zoom lens, allowing for more relaxed perspective, position and lighting.

Actually, dedicated macro lenses do not get their magnification by rearranging the optical prescription of a normal zoom lens at the wide end to shorten the minimum focusing distance: your optical recipe does not prioritize the best image quality at distances close to + ∞ as The one of a the typical zoom lenses and do not have the minimum focusing distances usually large in their long focal lengths that have the "normal" zoom lenses.

Macos: Allow the Java 1.7 application to run without displaying the message "Install Legacy Java SE 6" and JRE no JDK

I have the task of implementing an old Eclipse RCP application (Java 1.6) with a minimum or no change in the code in macOS Mojave 10.14 64bit. The application has not been implemented in a long time, the last target was Mac OS X Snow Leopard 10.6.

The main problem I have is that the best results (full set of features) were obtained by changing the build level of the application to Java 1.7, and by circumventing this error (where Mac complains, Java is not present when the JDK or JRE 1.7 or 1.8 was in fact correctly installed).

Mac error message about the lack of Java when Java is not missing

Error report:

Thanks to this hack:

It only works if you have the JDK installed, not the JRE. However, since this is a corporate shipment, the customer would never accept that the prerequisite is the JDK when it should be the JRE.

As you can see in my comment on the answer, I tried a bastard application of this solution in the JRE by modifying what I thought of the equivalent files and paths, but this did not work.

So, to summarize the situation

What I have

The application will run if:

  1. Install the JDK

  2. Apply this: https://apple.stackexchange.com/a/211033/324385

What I would like

For the application to start when there is:

  1. Only installed JRE 1.7 or 1.8

  2. Applied X fix what you suggest

3 i 2012, rm

BlackHatKings: Proxy Lists
Posted by: ThomasLound
Time of publication: June 30, 2019 at 1:53 p.m.