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Why is the use of alloca() not considered good practice?
...really no problem with it that you wouldn't also have with declaring large arrays?
– T.E.D.
Jun 19 '09 at 16:32
95
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How to convert a string with comma-delimited items to a list in Python?
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This is not an array, it is a list, Arrays represent basic values and behave very much like lists, except the type of objects stored in them is constrained.
– joaquin
Mar 22 '11 at 6:32
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PHP function overloading
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case 1:
return call_user_func_array(array($this, 'funcOneWithOneArg'), $args);
case 3:
return call_user_func_array(array($this, 'funcOneWithThreeArgs'), $args);
}
case 'anotherFunc':...
How do I get the key at a specific index from a Dictionary in Swift?
...ctionary.keys[index]
Another possible solution would be to initialize an array with keys as input, then you can use integer subscripts on the result:
let firstKey = Array(myDictionary.keys)[0] // or .first
Remember, dictionaries are inherently unordered, so don't expect the key at a given index...
split string only on first instance - java
...2);
As String.split(java.lang.String regex, int limit) explains:
The array returned by this method contains each substring of this string that is terminated by another substring that matches the given expression or is terminated by the end of the string. The substrings in the array are in the ...
Convert base64 string to ArrayBuffer
I need to convert a base64 encode string into an ArrayBuffer.
The base64 strings are user input, they will be copy and pasted from an email, so they're not there when the page is loaded.
I would like to do this in javascript without making an ajax call to the server if possible.
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How do you make an array of structs in C?
I'm trying to make an array of structs where each struct represents a celestial body.
7 Answers
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C++: What is the size of an object of an empty class?
...n zero.
This is required for, among other things, allowing you to handle arrays of objects and pointers to them. If your elements were allowed to be zero-sized then &(array[0]) would be identical to &(array[42]), which is going to cause all sorts of havoc to your processing loops.
The rea...
How to loop through array in jQuery?
I am trying to loop through an array. I have the following code:
11 Answers
11
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Check if $_POST exists
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The proper way of checking if array key exists is function array_key_exists()
The difference is that when you have $_POST['variable'] = null it means that key exists and was send but value was null
The other option is isset() which which will check if ...