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Remove a string from the beginning of a string
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Plain form, without regex:
$prefix = 'bla_';
$str = 'bla_string_bla_bla_bla';
if (substr($str, 0, strlen($prefix)) == $prefix) {
$str = substr($str, strlen($prefix));
}
Takes: 0.0369 ms (0.000,036,954 seconds)
And with:
$prefix = 'bla_';
$str = 'bla_string...
How do I get the result of a command in a variable in windows?
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13 Answers
13
Active
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When should you use constexpr capability in C++11?
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303
Suppose it does something a little more complicated.
constexpr int MeaningOfLife ( int a, int ...
Why is TypedReference behind the scenes? It's so fast and safe… almost magical!
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3 Answers
3
Active
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When is assembly faster than C?
...out floating point, they shine when it comes to precision as they give you 32 bits of precision with a predictable error (float only has 23 bit and it's harder to predict precision loss). i.e. uniform absolute precision over the entire range, instead of close-to-uniform relative precision (float).
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Why do I get a segmentation fault when writing to a “char *s” initialized with a string literal, but
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See the C FAQ, Question 1.32
Q: What is the difference between these initializations?
char a[] = "string literal";
char *p = "string literal";
My program crashes if I try to assign a new value to p[i].
A: A string literal (the formal t...
Can't pickle when using multiprocessing Pool.map()
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edited Feb 28 '17 at 14:31
Jean-François Fabre♦
122k1111 gold badges9797 silver badges156156 bronze badges
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Auto layout constraints issue on iOS7 in UITableViewCell
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132
I had this problem as well.. It appears that the contentView's frame doesn't get updated until ...
How to create streams from string in Node.Js?
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33
From node 10.17, stream.Readable have a from method to easily create streams from any iterable ...
Printing a variable memory address in swift
... you can do with this other than use it to identify the
/// object
Swift 3
For Swift 3, use withUnsafePointer:
var str = "A String"
withUnsafePointer(to: &str) {
print(" str value \(str) has address: \($0)")
}
s...