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What is the point of function pointers?
I have trouble seeing the utility of function pointers. I guess it may be useful in some cases (they exist, after all), but I can't think of a case where it's better or unavoidable to use a function pointer.
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Never seen before C++ for loop
I was converting a C++ algorithm to C#.
I came across this for loop:
12 Answers
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如何建立一套适合自己的高胜算交易系统 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...弈”，即看跌卖出的空方和看涨买入的多方进行博弈；
C) 股市博弈的本质和下棋很相似，有人说股市如棋，此言甚是；
D) 多空双方在“不同的时间等级上”进行厮杀和纠缠，正如没有两盘完全相同的棋局一样，股市也是一样...
'Incomplete final line' warning when trying to read a .csv file into R
.... So the problem is the format of the file.
One way of finding out, is to set the working directory to the directory where the file is. That way you see the extension of the file you read in. I know on Windows it's not shown standard, so you might believe it's csv while it isn't.
The next thing y...
How to add an empty column to a dataframe?
What's the easiest way to add an empty column to a pandas DataFrame object? The best I've stumbled upon is something like
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How do you run JavaScript script through the Terminal?
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If you're using MacBook.
Set up node.js in your system and open up the terminal
Navigate to the directory, where the js file is saved.
To execute run node <filename.js>
example, if filename is script.js run node script.js
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What is the most accurate way to retrieve a user's correct IP address in PHP?
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{
function getClientIP()
{
if (isset($_SERVER["HTTP_CF_CONNECTING_IP"]))
{
$_SERVER['REMOTE_ADDR'] = $_SERVER["HTTP_CF_CONNECTING_IP"];
};
foreach (array('HTTP_CLIENT_IP', 'HTT...
GoogleTest: How to skip a test?
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You can also run a subset of tests, according to the documentation:
Running a Subset of the Tests
By default, a Google Test program runs all tests the user has defined.
Sometimes, you want to run only a subset of the tests (e.g. for
debugging or ...
Determining complexity for recursive functions (Big O notation)
I have a Computer Science Midterm tomorrow and I need help determining the complexity of these recursive functions. I know how to solve simple cases, but I am still trying to learn how to solve these harder cases. These were just a few of the example problems that I could not figure out. Any help wo...
How do I find the location of my Python site-packages directory?
How do I find the location of my site-packages directory?
21 Answers
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