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Save An Image To Application Documents Folder From UIView On IOS
...want to store these images in Core Data, since that can impact performance if the data set grows too large. Better to write the images to files.
NSData *pngData = UIImagePNGRepresentation(image);
This pulls out PNG data of the image you've captured. From here, you can write it to a file:
NSArray...
git reset --hard HEAD leaves untracked files behind
...-f -d to get rid of untracked files and directories in your working copy.
If you need to reset the whole repository to master including all git submodules, run this script:
git reset --hard HEAD
git clean -f -d
git checkout master
git fetch origin master
git reset --hard origin/master
git pull
git...
Best way to list files in Java, sorted by Date Modified?
...n was to call File.listFiles and just resort the list based on File.lastModified, but I was wondering if there was a better way.
...
Detect HTTP or HTTPS then force HTTPS in JavaScript
...
Try this
if (location.protocol !== 'https:') {
location.replace(`https:${location.href.substring(location.protocol.length)}`);
}
location.href = blah adds this redirect to the browser history. If the user hits the back button, t...
clearing a char array c
...
It depends on how you want to view the array. If you are viewing the array as a series of chars, then the only way to clear out the data is to touch every entry. memset is probably the most effective way to achieve this.
On the other hand, if you are choosing to view th...
Python logging: use milliseconds in time format
...e(self, record, datefmt=None):
ct = self.converter(record.created)
if datefmt:
s = time.strftime(datefmt, ct)
else:
t = time.strftime("%Y-%m-%d %H:%M:%S", ct)
s = "%s,%03d" % (t, record.msecs)
return s
Notice the comma in "%s,%03d". This can not be fixed by ...
How to get the max of two values in MySQL?
...
Use GREATEST()
E.g.:
SELECT GREATEST(2,1);
Note: Whenever if any single value contains null at that time this function always returns null (Thanks to user @sanghavi7)
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improv...
Implementation difference between Aggregation and Composition in Java
I'm aware of the conceptual differences between Aggregation and Composition. Can someone tell me the implementation difference in Java between them with examples?
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How to create a zip file in Java
...ile called mytext.txt. Of course you can add more zip entries and also specify a subdirectory like this:
ZipEntry e = new ZipEntry("folderName/mytext.txt");
You can find more information about compression with Java here.
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regex for matching something if it is not preceded by something else
So with regex in java, I want to write a regex that will match if and only if the pattern is not preceded by certain characters. For example:
...