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Why is it said that “HTTP is a stateless protocol”?
...same socket. That is solely a performance thing, intended to minimize the time/bandwidth that'd otherwise be spent reestablishing a connection for each request.
As far as HTTP is concerned, they are all still separate requests and must contain enough information on their own to fulfill the request...
Reset identity seed after deleting records in SQL Server
...'t know why. Can you move it down a line. I copied and pasted this line 50 times and now I have to go back and fix it.
– AnotherDeveloper
Mar 4 '16 at 17:58
5
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Search code inside a Github project
... GitHub properties", and I did mention this Stack Overflow question at the time ;) )
Here is an illustration of a grep within the ruby code: it will looks for repos and users, but also for what I wanted to search in the first place: the code!
Initial answer and illustration of the former issue...
Auto-expanding layout with Qt-Designer
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@Michal Kottman: That only works at design time. It will not change the layout when the user resizes the window at run time.
– Jay
Feb 4 '13 at 21:26
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What is causing the error `string.split is not a function`?
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lol. 4 answers (at least) at the same time. I shouldn't look at the newest questions on SO :)
– Denys Séguret
Apr 13 '12 at 18:07
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Remove blank lines with grep
...tc.
* previous match (whitespace) may exist from 0 to infinite times
$ match end of line
Running the code-
$ echo "
> hello
>
> ok" |
> grep -v "^[[:space:]]*$"
hello
ok
To understand more about how/why this works, I recommend reading up on regular exp...
Can't su to user jenkins after installing Jenkins
...false at the end of the line.
Hint: You don't use su and sudo at the same time.
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Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
... has to keep track of the thread who actually obtained the mutex the first time around so that it can detect the difference between recursion vs. a different thread that should block instead. As another answer pointed out, there is a question of the additional overhead of this both in terms of memor...
How to get the first non-null value in Java?
...easons that i mentioned above is that an array allocation will happen each time you invoke the var arg version of the method. this could be wasteful for hand-fulls of items, which i suspect will be common usage.
– les2
May 4 '10 at 18:54
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Get image data url in JavaScript?
...ase64 version of an image file, they have to request it again (most of the time it will come from cache) but this time as a Blob.
Then you can use a FileReader to read it either as an ArrayBuffer, or as a dataURL.
function toDataURL(url, callback){
var xhr = new XMLHttpRequest();
x...