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What does Ruby have that Python doesn't, and vice versa?
...true and false instead of True and False (and nil instead of None).
When tested for truth, only false and nil evaluate to a false value. Everything else is true (including 0, 0.0, "", and []).
It’s elsif instead of elif.
It’s require instead of import. Otherwise though, usage is the same.
...
Can linux cat command be used for writing text to file?
... output.txt <<EOF
some text
some lines
EOF
For PHP file:
cat > test.php <<PHP
<?php
echo "Test";
echo \$var;
?>
PHP
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Remove excess whitespace from within a string
... whitespace for you - make sure you have "\" before "s" :) some online-php-testing pages remove it :)
– jave.web
Jul 3 '16 at 11:27
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Unicode equivalents for \w and \b in Java regular expressions?
... behaviour of the boundaries using all three equivalent definitions with a test suite that checks 110,385,408 matches per run, and which I've run on a dozen different data configurations according to:
0 .. 7F the ASCII range
80 .. FF the non-ASCII Latin1 range
100 .. FF...
How is “=default” different from “{}” for default constructor and destructor?
...structor, then things won't compile whether or not you destruct a Widget:
test.cpp:8:7: error: field of type 'A' has private destructor
A a_;
^
test.cpp:4:5: note: declared private here
~A();
^
1 error generated.
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Combine --user with --prefix error with setup.py install
...ame error when trying to install Powerline. powerline.readthedocs.org/en/latest/installation/…
– A-Dubb
Jul 3 '13 at 7:17
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Convert a float64 to an int in Go
...intf and strconv.Atois() were 2 orders of magnitude slower according to my tests with a matrix of float64 values that were intended to become correctly rounded int values.
package main
import (
"fmt"
"math"
)
func main() {
var x float64 = 5.51
var y float64 = 5.50
var z float64 ...
What is INSTALL_PARSE_FAILED_NO_CERTIFICATES error?
...
Luckily I tested my release apk on an old device before I rolled it out on Google Play. That would be a disaster if all < Android 7.0 devices failed to install the new version. That thing with two versions should be a BIG RED POP UP...
Handling a colon in an element ID in a CSS selector [duplicate]
...ugh "2" is not).
The identifier "te\st" is exactly the same identifier as "test".
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What's the idiomatic syntax for prepending to a short python list?
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If someone finds this question like me, here are my performance tests of proposed methods:
Python 2.7.8
In [1]: %timeit ([1]*1000000).insert(0, 0)
100 loops, best of 3: 4.62 ms per loop
In [2]: %timeit ([1]*1000000)[0:0] = [0]
100 loops, best of 3: 4.55 ms per loop
In [3]: %timeit [0]...