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Git ignore file for Xcode projects
Which files should I include in .gitignore when using Git in conjunction with Xcode ?
20 Answers
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How to copy a selection to the OS X clipboard
I have an area selected in Vim. How can I copy it into the OS X clipboard?
27 Answers
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How can I trim beginning and ending double quotes from a string?
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You can use String#replaceAll() with a pattern of ^\"|\"$ for this.
E.g.
string = string.replaceAll("^\"|\"$", "");
To learn more about regular expressions, have al ook at http://regular-expression.info.
That said, this smells a bit like that you're try...
How to screenshot website in JavaScript client-side / how Google did it? (no need to access HDD) [du
...ts" answers your problem.
You can use JavaScript/Canvas to do the job but it is still experimental.
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Can I use jQuery with Node.js?
Is it possible to use jQuery selectors/DOM manipulation on the server-side using Node.js?
21 Answers
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How can mixed data types (int, float, char, etc) be stored in an array?
... first check the type, then use the corresponding member of the union. A switch statement is useful:
switch (my_array[n].type) {
case is_int:
// Do stuff for integer, using my_array[n].ival
break;
case is_float:
// Do stuff for float, using my_array[n].fval
break;
case is_char:
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Associative arrays in Shell scripts
...add to Irfan's answer, here is a shorter and faster version of get() since it requires no iteration over the map contents:
get() {
mapName=$1; key=$2
map=${!mapName}
value="$(echo $map |sed -e "s/.*--${key}=\([^ ]*\).*/\1/" -e 's/:SP:/ /g' )"
}
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When should I use malloc in C and when don't I?
...mewhere in the read-only part of the memory and you just have a pointer to it. You can use the string as read-only. You cannot make changes to it. Example:
some_memory[0] = 'h';
Is asking for trouble.
On the other hand
some_memory = (char *)malloc(size_to_allocate);
is allocating a char arra...
How can I validate a string to only allow alphanumeric characters in it?
... string using Regular Expressions to only allow alphanumeric characters in it?
10 Answers
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Can I “multiply” a string (in C#)?
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And it's not much more in .NET 3.5: String.Concat(Enumerable.Repeat("Hello", 4).ToArray())
– Mark Foreman
Sep 3 '12 at 0:54
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