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Objective-C Static Class Level variables
...program exactly one time just before the class, or any class that inherits from it, is sent its first message from within the program. (Thus the method may never be invoked if the class is not used.)".
Feel free to use the static variable within any ClassA class/instance method.
Code sample:
file...
How to determine if a number is a prime with regex?
... can, which is bad in this case because it prevents the backreference part from working.)
The next part is the backreference: That same set of characters (two or more), appearing again. Said backreference appears one or more times.
So. The captured group corresponds to a natural number of characte...
How to initialize all members of an array to the same value?
...ize of compiled binaries. For N = 65536 (instead of 1024), my binary jumps from 15 KB to 270 KB in size!!
– Cetin Sert
Mar 28 '13 at 15:15
...
Easiest way to check for an index or a key in an array?
... tests only for existence [of parameter]
This answer is actually adapted from the answers for this SO question: How to tell if a string is not defined in a bash shell script?
A wrapper function:
exists(){
if [ "$2" != in ]; then
echo "Incorrect usage."
echo "Correct usage: exists {k...
rreplace - How to replace the last occurrence of an expression in a string?
Is there a quick way in Python to replace strings but, instead of starting from the beginning as replace does, starting from the end? For example:
...
JavaScript console.log causes error: “Synchronous XMLHttpRequest on the main thread is deprecated…”
...ous XMLHttpRequest outside of workers is in the process of
being removed from the web platform as it has detrimental effects to
the end user's experience. (This is a long process that takes many
years.) Developers must not pass false for the async argument when the
JavaScript global environm...
Why do I get a segmentation fault when writing to a “char *s” initialized with a string literal, but
...stored in read-only memory when the program is run. This is to prevent you from accidentally changing a string constant. In your first example, "string" is stored in read-only memory and *str points to the first character. The segfault happens when you try to change the first character to 'z'.
In t...
Why is “int i = 2147483647 + 1;” OK, but “byte b = 127 + 1;” is not compilable?
... need correcting. It was chosen very deliberately and correctly at that. From the closest source to hand (Wikipedia) : "In most languages, the word coercion is used to denote an implicit conversion, either during compilation or during run time." and "In computer science, type conversion, typecasti...
Best way to convert an ArrayList to a string
...n a StringBuilder anyway. Here's a part of the disassembly of the bytecode from the for loop from the above program:
61: new #13; //class java/lang/StringBuilder
64: dup
65: invokespecial #14; //Method java/lang/StringBuilder."<init>":()V
68: aload_2
69: invokevirtual ...
Redirect from asp.net web api post action
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