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How to replace all occurrences of a character in string?
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std::string doesn't contain such function but you could use stand-alone replace function from algorithm header.
#include <algorithm>
#include <string>
void some_func() {
std::string s = "example string";
std::replace( s.begin(), s.end(), 'x', 'y'); // replace all 'x' to 'y'
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How can you diff two pipelines in Bash?
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A one-line with 2 tmp files (not what you want) would be:
foo | bar > file1.txt && baz | quux > file2.txt && diff file1.txt file2.txt
With bash, you might try though:
diff <(foo | bar) <(baz | ...
Is a view faster than a simple query?
...ting queries.
Update: At least three people have voted me down on this one. With all due respect, I think that they are just wrong; Microsoft's own documentation makes it very clear that Views can improve performance.
First, simple views are expanded in place and so do not directly contribute t...
How to store a command in a variable in a shell script?
...or privilege escalation vulnerabilities if that variable can be set by someone with less privileges. (Iterating over all subdirectories in /tmp, for instance? You'd better trust every single user on the system to not make one called $'/tmp/evil-$(rm -rf $HOME)\'$(rm -rf $HOME)\'/').
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How to create a video from images with FFmpeg?
...u encounter problems, such as the first image is skipped or only shows for one frame, then use the fps video filter instead of -r for the output framerate
ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4
Alternatively the format video filter can be added to the fi...
What is a message pump?
...ctive session. The (quite strong) advice given there is not to do so. In one post it is stated "The Office APIs all assume you are running Office in an interactive session on a desktop, with a monitor, keyboard and mouse and, most importantly, a message pump." I'm not sure what that is. (I've be...
Execute JavaScript using Selenium WebDriver in C#
...language bindings do not exactly correspond to those in the Java bindings. One of the principles of the project is that each language binding should "feel natural" to those comfortable coding in that language. In C#, the code you'd want for executing JavaScript is as follows
IWebDriver driver; // a...
Android Facebook integration with invalid key hash
In one of my apps I need to get data from Facebook... I am doing this:
25 Answers
25
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What's a good rate limiting algorithm?
...te-limiting queue for a Python IRC bot, and it partially works, but if someone triggers less messages than the limit (e.g., rate limit is 5 messages per 8 seconds, and the person triggers only 4), and the next trigger is over the 8 seconds (e.g., 16 seconds later), the bot sends the message, but the...
How do you rotate a two dimensional array?
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One of my favorite SO answers of all time. Very instructive!
– g33kz0r
Apr 4 '13 at 2:49
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