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Difference between matches() and find() in Java Regex
... ^ at the start and $ at the end of your pattern, meaning it will not look for a substring. Hence the output of this code:
public static void main(String[] args) throws ParseException {
Pattern p = Pattern.compile("\\d\\d\\d");
Matcher m = p.matcher("a123b");
System.out.println(m.find()...
Upgrade python packages from requirements.txt using pip command
...red this question here. Here's my solution:
Because there was no easy way for upgrading package by package, and updating the requirements.txt file, I wrote this pip-upgrader which also updates the versions in your requirements.txt file for the packages chosen (or all packages).
Installation
pip i...
The simplest way to resize an UIImage?
...ass 0.0 to use the current device's pixel scaling factor (and thus account for Retina resolution).
// Pass 1.0 to force exact pixel size.
UIGraphicsBeginImageContextWithOptions(newSize, NO, 0.0);
[image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)];
UIImage *newImage = ...
What are conventions for filenames in Go?
I could find the conventions for naming packages in Go: no underscore between words, everything lowercase.
4 Answers
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$_POST vs. $_SERVER['REQUEST_METHOD'] == 'POST'
... request method (surprise).
$_POST contains any post data.
It's possible for a POST request to contain no POST data.
I check the request method — I actually never thought about testing the $_POST array. I check the required post fields, though. So an empty post request would give the user a lot...
CSS filter: make color image with transparency white
...be brightness(infinity). But in practice brightness(10000%) is high enough for the gray resulting from contrast(0)
– Oriol
Oct 12 '16 at 14:15
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npm install private github repositories by dependency in package.json
...
Do you have a reference link for this solution?
– Ian
Apr 9 '15 at 20:08
3
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Syntax for creating a two-dimensional array
...he following:
int[][] multi = new int[5][10];
... which is a short hand for something like this:
int[][] multi = new int[5][];
multi[0] = new int[10];
multi[1] = new int[10];
multi[2] = new int[10];
multi[3] = new int[10];
multi[4] = new int[10];
Note that every element will be initialized to ...
Is there a common Java utility to break a list into batches?
...en size. I just wanted to know if there is already any apache commons util for this.
17 Answers
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How can I stop redis-server?
...ested shutdown...
[6716] 02 Aug 15:48:44 * Saving the final RDB snapshot before exiting.
[6716] 02 Aug 15:48:44 * DB saved on disk
[6716] 02 Aug 15:48:44 # Redis is now ready to exit, bye bye...
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