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What does PHP keyword 'var' do?
This is probably a very trivial question, but I haven't been able to find the answer neither through web search engines, nor on php.net. Please just direct me to where I can read about this, if you haven't got time to explain.
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How does this checkbox recaptcha work and how can I use it?
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Where does this explain, how the new No CAPTCHA reCAPTCHA works?
– Nikhil Girraj
Jun 19 '15 at 11:55
5
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How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
...cient (looking through the whole string instead of just the start). But it does not do that because it passes the pos parameter as 0, which limits the search to only match at that position or earlier. For example:
std::string test = "0123123";
size_t match1 = test.rfind("123"); // returns 4 (rig...
Escape angle brackets in a Windows command prompt
...al operators like <, >, &, |, &&, || are parsed. See How does the Windows Command Interpreter (CMD.EXE) parse scripts? for more info.
sin3.14 points out that pipes may require multiple escapes. For example:
echo ^^^<html^^^>|findstr .
The reason pipes require multiple e...
Why does Python code run faster in a function?
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This is the first I've seen of bytecode.. How does one look at it, and is important to know?
– Zack
Jun 30 '12 at 22:30
4
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What does Google Closure Library offer over jQuery? [closed]
...Working with jQuery gives you good tools and a lightweight library, but it does not minify your own code. The Closure compiler will. The closure inspector may also be useful, as sometimes minified code has a different behavior than the original one, and is a pain to debug. It integrates with Firebug...
What does “program to interfaces, not implementations” mean?
...should not matter to the client code calling sort as long as the interface does not change.
Libraries like the Java API and the .NET Framework make heavy use of interfaces because millions of programmers use the objects provided. The creators of these libraries have to be very careful that they do ...
How does one write code that best utilizes the CPU cache to improve performance?
... hardware prefetcher is usually doing a very good job. And if your program doesn't display regular access patterns, you may improve things by adding prefetch instructions yourself.
Regrouping instructions in such a way that those that always miss in the cache occur close to each other, the CPU can ...
Run a string as a command within a Bash script
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Does eval pass forward the command return value (return value, not string output)?
– Tomáš Zato - Reinstate Monica
Apr 21 '15 at 19:53
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How to add border radius on table row
Does anyone know how to style tr as we like?
11 Answers
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