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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 ...
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...
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...
How to do an instanceof check with Scala(Test)
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answered Dec 19 '11 at 13:27
agilesteelagilesteel
16.2k55 gold badges3939 silver badges5454 bronze badges
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Convert tuple to list and back
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KhonixKhonix
3,32311 gold badge1111 silver badges1515 bronze badges
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capturing self strongly in this block is likely to lead to a retain cycle
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answered Jan 28 '13 at 6:39
TimTim
56.8k1818 gold badges153153 silver badges160160 bronze badges
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What are the mechanics of short string optimization in libc++?
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The libc++ basic_string is designed to have a sizeof 3 words on all architectures, where sizeof(word) == sizeof(void*). You have correctly dissected the long/short flag, and the size field in the short form.
what value would __min_cap, the capacity of short strings, take f...
What are the advantages of NumPy over regular Python lists?
...as you describe, in Python, would take at least 20 MB or so, while a NumPy 3D array with single-precision floats in the cells would fit in 4 MB. Access in reading and writing items is also faster with NumPy.
Maybe you don't care that much for just a million cells, but you definitely would for a bil...
How to reshape data from long to wide format
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answered May 4 '11 at 23:20
ChaseChase
59.5k1515 gold badges131131 silver badges157157 bronze badges
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How to pattern match using regular expression in Scala?
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237
You can do this because regular expressions define extractors but you need to define the regex ...