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Delete all lines beginning with a # from a file
...with comments in a file begin with # . How can I delete all of the lines (and only those lines) which begin with # ? Other lines containing # , but not at the beginning of the line should be ignored.
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do {…} while(false)
I was looking at some code by an individual and noticed he seems to have a pattern in his functions:
25 Answers
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How to convert an array to object in PHP?
...:
$object = (object) $array;
Another option would be to instantiate a standard class as a variable, and loop through your array while re-assigning the values:
$object = new stdClass();
foreach ($array as $key => $value)
{
$object->$key = $value;
}
As Edson Medina pointed out, a reall...
Printing hexadecimal characters in C
... case), your chars are being promoted to int via sign-extension.
Since c0 and 80 have a leading 1-bit (and are negative as an 8-bit integer), they are being sign-extended while the others in your sample don't.
char int
c0 -> ffffffc0
80 -> ffffff80
61 -> 00000061
Here's a solution:
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How to center a button within a div?
...r, however Flexbox would be the correct approach now.
Live Demo
Vertical and horizontal alignment.
#wrapper {
display: flex;
align-items: center;
justify-content: center;
}
Just horizontal (as long as the main flex axis is horizontal which is default)
#wrapper {
display: flex;
justif...
How to get the connection String from a database
...the "Server Explorer" window in Visual Studio (menu View, Server Explorer) and connect to the server from that window.
Then you can see the connection string in the properties of the connected server (choose the connection and press F4 or Alt+Enter or choose Properties on the right click menu).
Ad...
Best way to disable button in Twitter's Bootstrap [duplicate]
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I have just tried this with Bootstrap 3 and $('.button').prop('disabled', true); stops click event propagation, i.e. Bootstrap takes care of that for you.
– Dr. Jan-Philip Gehrcke
Sep 25 '14 at 15:06
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Why is inserting in the middle of a linked list O(1)?
...r business logic that a new node needs to be added (or an old one deleted) and you do so. You may add 50 nodes in a single iteration and each of those nodes is just O(1) the time to unlink two adjacent nodes and insert your new one..
Edit: Man, you type a second paragraph and all of a sudden inste...
Serializing PHP object to JSON
So I was wandering around php.net for information about serializing PHP objects to JSON, when I stumbled across the new JsonSerializable Interface . It's only PHP >= 5.4 though, and I'm running in a 5.3.x environment.
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SignalR - Sending a message to a specific user using (IUserIdProvider) *NEW 2.0.0*
...ngs to whom (the user), we need to create a mapping between the connection and the user. This depends on how you identify a user in your application.
In SignalR 2.0, this is done by using the inbuilt IPrincipal.Identity.Name, which is the logged in user identifier as set during the ASP.NET authenti...