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Bash tool to get nth line from a file
...en using head -n | tail -1 which does the trick, but I've been wondering if there's a Bash tool that specifically extracts a line (or a range of lines) from a file.
...
Fastest way to reset every value of std::vector to 0
...guessing is about as fast. I'd use your method.
– Omnifarious
Jan 13 '12 at 10:04
But, jumping to memset is a single i...
Delete all but the most recent X files in bash
...d globbing.
inability to distinguish between files and directories (i.e., if directories happened to be among the 5 most recently modified filesystem items, you'd effectively retain fewer than 5 files, and applying rm to directories will fail).
wnoise's answer addresses these issues, but the solu...
How to check whether a string is Base64 encoded or not
I want to decode a Base64 encoded string, then store it in my database. If the input is not Base64 encoded, I need to throw an error.
...
Pythonic way to check if a file exists? [duplicate]
Which is the preferred way to check if a file exists and if not create it?
5 Answers
5...
How can i query for null values in entity framework?
... select entry;
This is a nasty bug which has bitten me several times. If this bug has affected you too, please visit the bug report on UserVoice and let Microsoft know that this bug has affected you as well.
Edit: This bug is being fixed in EF 4.5! Thanks everyone for upvoting this bug!
Fo...
What is the “hasClass” function with plain JavaScript?
...an use jQuery's own implementation:
var className = " " + selector + " ";
if ( (" " + element.className + " ").replace(/[\n\t]/g, " ").indexOf(" thatClass ") > -1 )
To answer your more general question, you can look at jQuery's source code on github or at the source for hasClass specifically ...
Mock vs MagicMock
...es all these protocol methods by creating new Mocks and
setting them, so if every new mock created a bunch of new mocks and
set those as protocol methods and then all of those protocol methods
created a bunch more mocks and set them on their protocol methods,
you've got infinite recursion......
angularjs: ng-src equivalent for background-image:url(…)
...rc is a native directive, so it seems you want a similar directive that modifies your div's background-image style.
You could write your own directive that does exactly what you want. For example
app.directive('backImg', function(){
return function(scope, element, attrs){
var url = a...
UITableViewCell subview disappears when cell is selected
...oundColor;
[super setSelected:selected animated:animated];
if (selected){
self.yourView.backgroundColor = color;
}
}
-(void)setHighlighted:(BOOL)highlighted animated:(BOOL)animated{
UIColor *color = self.yourView.backgroundColor;
[super setHighlighted:hig...