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Installing specific package versions with pip
I'm trying to install version 1.2.2 of the MySQL_python adaptor, using a fresh virtualenv created with the --no-site-packages option. The current version shown in PyPi is 1.2.3 . Is there a way to install the older version? I found an article stating that this should do it:
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What is the most efficient way to concatenate N arrays?
...oncat() is the way to go for convenience and likely performance.
var a = [1, 2], b = ["x", "y"], c = [true, false];
var d = a.concat(b, c);
console.log(d); // [1, 2, "x", "y", true, false];
For concatenating just two arrays, the fact that push accepts multiple arguments consisting of elements to ...
Get the Query Executed in Laravel 3/4
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318
Laravel 4+
In Laravel 4 and later, you have to call DB::getQueryLog() to get all ran queries.
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How can I get the external SD card path for Android 4.0+?
...ream is = process.getInputStream();
final byte[] buffer = new byte[1024];
while (is.read(buffer) != -1) {
s = s + new String(buffer);
}
is.close();
} catch (final Exception e) {
e.printStackTrace();
}
// parse output
final String[]...
How to convert a string to lower case in Bash?
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Bash 4.0
$ echo "${a,,}"
hi all
sed
$ echo "$a" | sed -e 's/\(.*\)/\L\1/'
hi all
# this also works:
$ sed -e 's/\(.*\)/\L\1/' <<< "$a"
hi all
Perl
$ echo "$a" | perl -ne 'print lc'
hi all
Bash
lc(){
case "$1" in
[A-Z])
n=$(printf "%d" "'$1")
n=$((n+32)...
How to force LINQ Sum() to return 0 while source collection is empty
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answered Jul 11 '13 at 12:36
Simon BelangerSimon Belanger
13.5k33 gold badges3333 silver badges3434 bronze badges
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Test if object implements interface
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191
The instanceof operator does the work in a NullPointerException safe way. For example:
if ("...
JavaScript: location.href to open in new window/tab?
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961
window.open(
'https://support.wwf.org.uk/earth_hour/index.php?type=individual',
'_blank' // ...
Html table tr inside td
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163
You must add a full table inside the td
<table>
<tr>
<...