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Generate random string/characters in JavaScript
I want a 5 character string composed of characters picked randomly from the set [a-zA-Z0-9] .
77 Answers
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How can I count the number of matches for a regex?
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Solution for Java 8 and older
You'll have to do the following. (Starting from Java 9, there is a nicer solution)
int count = 0;
while (matcher.find())
count++;
Btw, matcher.groupCount() is something completely different.
Complete example:
import java.util.regex.*;
class Test {
public...
How to generate a random number in C++?
...y of one element - the first element of a pseudo-random sequence generated from seed equal to current time of second precision. What do you expect to see on output then?
Obviously when you happen to run application on the same second - you use the same seed value - thus your result is the same of co...
UIView frame, bounds and center
...d it determines the position of the exact center point of the view.
Taken from UIView + position these are the relationships (they don't work in code since they are informal equations) among the previous properties:
frame.origin = center - (bounds.size / 2.0)
center = frame.origin + (bounds.size ...
How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
I have a UIImage (Cocoa Touch). From that, I'm happy to get a CGImage or anything else you'd like that's available. I'd like to write this function:
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How do I import a specific version of a package using go get?
coming from a Node environment I used to install a specific version of a vendor lib into the project folder ( node_modules ) by telling npm to install that version of that lib from the package.json or even directly from the console, like so:
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How to remove an item for a OR'd enum?
...omplement ~Q), the statement X & ~Q clears any bits that were set in Q from X and returns the result.
So to remove or clear the BLUE bits, you use the following statement:
colorsWithoutBlue = colors & ~Blah.BLUE
colors &= ~Blah.BLUE // This one removes the bit from 'colors' itself
Yo...
Remove an Existing File from a Git Repo
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Just to give the full answer all at once:
from klemens: You need to add the file to your .gitignore file somewhere above the undesired file in the repo. i.e.
$ cd
$ cat >> .gitignore
development.log
C-d
from m. narebski: You then need to remove the file from ...
Remove commas from the string using JavaScript
I want to remove commas from the string and calculate those amount using JavaScript.
2 Answers
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Get all Attributes from a HTML element with Javascript/jQuery
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You can get the DOM object from a jQuery object via the get method...e.g.: var obj = $('#example').get(0);
– Matt Huggins
Sep 24 '10 at 22:25
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