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What's better at freeing memory with PHP: unset() or $var = null
...that unset man page don't include that section anymore)
Note that until php5.3, if you have two objects in circular reference, such as in a parent-child relationship, calling unset() on the parent object will not free the memory used for the parent reference in the child object. (Nor will the memory...
What is the difference between shallow copy, deepcopy and normal assignment operation?
...l.
Here's a little demonstration:
import copy
a = [1, 2, 3]
b = [4, 5, 6]
c = [a, b]
Using normal assignment operatings to copy:
d = c
print id(c) == id(d) # True - d is the same object as c
print id(c[0]) == id(d[0]) # True - d[0] is the same object as c[0]
Using a shallow ...
Laravel requires the Mcrypt PHP extension
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295
The web enabled extensions and command line enabled extensions can differ. Run php -m in your te...
How do I compile and run a program in Java on my Mac?
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5 Answers
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Override and reset CSS style: auto or none don't work
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Yi JiangYi Jiang
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MySQL select one column DISTINCT, with corresponding other columns
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195
try this query
SELECT ID, FirstName, LastName FROM table GROUP BY(FirstName)
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What's the difference between CSS classes .foo.bar (without space) and .foo .bar (with space) [dupli
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5 Answers
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How to check if an element is in an array
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Swift 2, 3, 4, 5:
let elements = [1, 2, 3, 4, 5]
if elements.contains(5) {
print("yes")
}
contains() is a protocol extension method of SequenceType (for sequences of Equatable elements) and not a global method as in
earlier releases....
How to find index of list item in Swift?
... is supported by another extension of CollectionType:
let arr2 = [1,2,3,4,5,6,7,8,9,10]
let indexOfFirstGreaterThanFive = arr2.indexOf({$0 > 5}) // 5
let indexOfFirstGreaterThanOneHundred = arr2.indexOf({$0 > 100}) // nil
Note that these two functions return optional values, as find did bef...
What are the “must have” jQuery plugins? [closed]
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45
My list:
Autocomplete
Input field to enable users quickly finding and selecting some value, ...