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Efficient way to remove keys with empty strings from a dict
I have a dict and would like to remove all the keys for which there are empty value strings.
17 Answers
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Display a tooltip over a button using Windows Forms
...ying tool tips for multiple elements on a single form.
Say your button is called MyButton.
Add a ToolTip control (under Common
Controls in the Windows Forms
toolbox) to your form.
Give it a
name - say MyToolTip
Set the "Tooltip on MyToolTip" property of MyButton (under Misc in
the button property ...
Adding div element to body or document in JavaScript
...0%;opacity:0.3;z-index:100;background:#000;"></div>';
Edit:-
Ideally you should use body.appendChild method instead of changing the innerHTML
var elem = document.createElement('div');
elem.style.cssText = 'position:absolute;width:100%;height:100%;opacity:0.3;z-index:100;background:#000';...
What's the best manner of implementing a social activity stream? [closed]
...a social activity stream (Facebook is the most famous example). Problems/challenges involved are:
13 Answers
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Create a .txt file if doesn't exist, and if it does append a new line
... come i wont see that before? Damn... I felt like a total dumb thanks. I really preciate these kinda good answers.
– Berker Yüceer
Mar 28 '12 at 13:07
7
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Copy files without overwrite
I just can't seem to find a way on the command line to say "copy all the files from directory A to directory B, but if the file already exists in directory B, don't overwrite it, no matter which file is newer, and don't prompt me."
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What is an API key? [closed]
... further verify the origin and to prevent tampering with the values.
Typically, if you can identify the source of a request positively, it acts as a form of authentication, which can lead to access control. For example, you can restrict access to certain API actions based on who's performing the re...
jQuery: Check if div with certain class name exists
Using jQuery I'm programmatically generating a bunch of div 's like this:
18 Answers
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XML Schema (XSD) validation tool? [closed]
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After some research, I think the best answer is Xerces, as it implements all of XSD, is cross-platform and widely used. I've created a small Java project on github to validate from the command line using the default JRE parser, which is normally Xerces. This can be used on Windows/Mac/Linux.
The...
Validating parameters to a Bash script
...ant script as far as I can tell; it doesn't use any bashisms, which is actually important because /bin/sh on Ubuntu is actually dash these days, not bash.
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