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How do I negate a test with regular expressions in a bash script?
Using GNU bash (version 4.0.35(1)-release (x86_64-suse-linux-gnu), I would like to negate a test with Regular Expressions. For example, I would like to conditionally add a path to the PATH variable, if the path is not already there, as in:
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RegEx to make sure that the string contains at least one lower case char, upper case char, digit and
...\W might be a bit broad. I'd replace it with a character set like this: [-+_!@#$%^&*.,?] (feel free to add more of course!)
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Reload .profile in bash shell script (in unix)?
...ebody would use a variable assignment like MyVar="$foo$MyVar" in their bash_profile, then source ~/.profile would give the end result MyVar="$foo$MyVar$MyVar", hence $MyVar would have the wrong value afterwards. (Regardless of bad practices, just ask for an alternate solution)
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How to find out element position in slice?
...check if container has an element you can just if element in collection: do_something()
– OCyril
Nov 29 '11 at 18:26
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How do I verify that an Android apk is signed with a release certificate?
...t; jdk < bin path in cmd prompt)
$ jarsigner -verify -verbose -certs my_application.apk
If you see "CN=Android Debug", this means the .apk was signed with the debug key generated by the Android SDK
(means it is unsigned), otherwise you will find something for CN.
For more details see: http://d...
What's the “average” requests per second for a production web application?
...itching the jdk to an earlier release fixed the issue. We were on jdk1.6.0_26 I believe.
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How to get a one-dimensional scalar array as a doctrine dql query result?
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PHP < 5.5
You can use array_map, and since you only have on item per array, you can elegantly use
'current' as callback, instead of writing a closure.
$result = $em->createQuery("SELECT a.id FROM Auction a")->getScalarResult();
$ids = array_map...
is there a post render callback for Angular JS directive?
...meout has the added benefit of calling $scope.$apply() after it runs. With _.defer() you will need to call it manually if myFunction changes variables on the scope.
– parliament
Aug 10 '15 at 4:07
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JSON to pandas DataFrame
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I found a quick and easy solution to what I wanted using json_normalize() included in pandas 1.01.
from urllib2 import Request, urlopen
import json
import pandas as pd
path1 = '42.974049,-81.205203|42.974298,-81.195755'
request=Request('http://maps.googleapis.com/maps/api/elevati...
Java - get pixel array from image
... BGR ordering. You should check the incoming BufferedImage's type e.g. TYPE_INT_RGB or TYPE_3BYTE_BGR and handle appropriately. This is one of the things that getRGB() does for you, that makes it slower :-(
– millhouse
Mar 30 '15 at 4:58
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