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Determine if a function exists in bash
Currently I'm doing some unit tests which are executed from bash. Unit tests are initialized, executed and cleaned up in a bash script. This script usualy contains an init(), execute() and cleanup() functions. But they are not mandatory. I'd like to test if they are or are not defined.
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What is the difference between vmalloc and kmalloc?
...ndling of a system call, should I specify GFP_ATOMIC ? Is a system call executed in an atomic context?
7 Answers
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Python timedelta in years
... rather stick with the standard library, the answer is a little more complex::
from datetime import datetime
def yearsago(years, from_date=None):
if from_date is None:
from_date = datetime.now()
try:
return from_date.replace(year=from_date.year - years)
except ValueError...
How to check if a stored procedure exists before creating it
I have a SQL script that has to be run every time a client executes the "database management" functionality. The script includes creating stored procedures on the client database. Some of these clients might already have the stored procedure upon running the script, and some may not. I need to have...
How to sort git tags by version string order of form rc-X.Y.Z.W?
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The -V argument isn't available on the OS X(10.8)-provided version (5.93) of sort. :(
– Julien
Jan 3 '14 at 14:46
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Is there a splice method for strings?
...aster to slice the string twice, like this:
function spliceSlice(str, index, count, add) {
// We cannot pass negative indexes directly to the 2nd slicing operation.
if (index < 0) {
index = str.length + index;
if (index < 0) {
index = 0;
}
}
return str.slice(0, inde...
Clearing purchases from iOS in-app purchase sandbox for a test user
... have any ideas on how to reset and/or clear the iOS in-app purchase sandbox?
8 Answers
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Create a GUID in Java
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Have a look at the UUID class bundled with Java 5 and later.
For example:
If you want a random UUID you can use the randomUUID method.
If you want a UUID initialized to a specific value you can use the UUID constructor or the fromString method.
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Handling the window closing event with WPF / MVVM Light Toolkit
...'d like to handle the Closing event (when a user clicks the upper right 'X' button) of my window in order to eventually display a confirm message or/and cancel the closing.
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