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AngularJS: How to clear query parameters in the URL?
...plication needs to have access to the user's LinkedIn profile. In order to do that I need to redirect the user to a LinkedIn URL which contains a callback redirect_uri parameter which will tell LinkedIn to redirect the user back to my webapp and include a "code" query param in the URL. It's a tradit...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
...t
trap "rm -f ${LOCKFILE}; exit" INT TERM EXIT
echo $$ > ${LOCKFILE}
# do stuff
sleep 1000
rm -f ${LOCKFILE}
The trick here is the kill -0 which doesn't deliver any signal but just checks if a process with the given PID exists. Also the call to trap will ensure that the lockfile is removed e...
Understanding implicit in Scala
...d clashes, it's a good idea to make the type specific to its purpose, e.g. don't require your methods to find an implicit Int!
example:
// probably in a library
class Prefixer(val prefix: String)
def addPrefix(s: String)(implicit p: Prefixer) = p.prefix + s
// then probably in your applicatio...
Write text files without Byte Order Mark (BOM)?
... using VB.Net with UTF8 encoding, without BOM. Can anybody help me, how to do this?
I can write file with UTF8 encoding but, how to remove Byte Order Mark from it?
...
How do I set the table cell widths to minimum except last column?
...as possible, and you will prevent the ones before that from wrapping. This does the same as the other answers given, but way more efficient.
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Find kth smallest element in a binary search tree in Optimum way
...ble. How to achieve it efficiently?
The solution that I have in my mind is doing the operation in O(n), the worst case since I am planning to do an inorder traversal of the entire tree. But deep down I feel that I am not using the BST property here. Is my assumptive solution correct or is there a be...
Why is there no tuple comprehension in Python?
...r expression that outputs a list, set(i for i in (1, 2, 3)) outputs a set. Does that mean the comprehension syntax is not needed? Perhaps not, but it is awfully handy. For the rare cases you need a tuple instead, the generator expression will do, is clear, and doesn't require the invention of anothe...
In JavaScript, does it make a difference if I call a function with parentheses?
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window.onload = initAll();
This executes initAll() straight away and assigns the function's return value to window.onload. This is usually not what you want. initAll() would have to return a function for this to make sense.
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Using print statements only to debug
...But, generally, outputting so much information is not a good practice. How do I use the print statements only when I want to debug and let them be skipped when I don't want them to be printed?
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Check if current directory is a Git repository
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Copied from the bash completion file, the following is a naive way to do it
# Copyright (C) 2006,2007 Shawn O. Pearce <spearce@spearce.org>
# Conceptually based on gitcompletion (http://gitweb.hawaga.org.uk/).
# Distributed under the GNU General Public License, version 2.0.
if [ -d .git...