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Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
I am doing some numerical optimization on a scientific application. One thing I noticed is that GCC will optimize the call pow(a,2) by compiling it into a*a , but the call pow(a,6) is not optimized and will actually call the library function pow , which greatly slows down the performance. (In ...
How to convert array values to lowercase in PHP?
How can I convert all values in an array to lowercase in PHP?
10 Answers
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Reason to Pass a Pointer by Reference in C++?
Under which circumstances would you want to use code of this nature in c++?
6 Answers
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How should I escape strings in JSON?
When creating JSON data manually, how should I escape string fields? Should I use something like Apache Commons Lang's StringEscapeUtilities.escapeHtml , StringEscapeUtilities.escapeXml , or should I use java.net.URLEncoder ?
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The Android emulator is not starting, showing “invalid command-line parameter”
I made a simple "Hello World" program in Eclipse . I added nothing to a Java file and only added a text view in file main.xml as
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How do I get bit-by-bit data from an integer value in C?
I want to extract bits of a decimal number.
8 Answers
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constant pointer vs pointer on a constant value [duplicate]
What is the difference between the following declarations?
11 Answers
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Loop through an array of strings in Bash?
I want to write a script that loops through 15 strings (array possibly?) Is that possible?
19 Answers
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How can I build XML in C#?
How can I generate valid XML in C#?
9 Answers
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