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Best way to serialize an NSData into a hexadeximal string
...iorate for large amounts of data. I profiled this with a 2MB file on my iPhone 5. Time comparison was 0.05 vs 12 seconds. Memory footprint is negligible with this method while the other method grew the heap to 70MBs!
- (NSString *) hexString
{
NSUInteger bytesCount = self.length;
if (bytesC...
How to complete a git clone for a big project on an unstable connection?
I am trying to git clone the LibreOffice codebase, but at the moment I have an internet connection of about 300kbps and it's just anything but stable. I can get the connection back any moment, but then the git clone process already stopped working, and no way to get it running again. Is there some w...
Convert decimal to hexadecimal in UNIX shell script
...echo "obase=16; 34" | bc
If you want to filter a whole file of integers, one per line:
( echo "obase=16" ; cat file_of_integers ) | bc
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How do I autoindent in Netbeans?
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Tried it with a minified file (all code on one line) and won't indent anything: the whole file stays on one line.
– Marco Marsala
May 12 '16 at 6:27
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How are zlib, gzip and zip related? What do they have in common and how are they different?
... other applications. zlib was adapted from the gzip code.
All of the mentioned patents have since expired.
The zlib library supports Deflate compression and decompression, and three kinds of wrapping around the deflate streams. Those are: no wrapping at all ("raw" deflate), zlib wrapping, which is...
Get element from within an iFrame
...at more than ternary operators. They seem to not know that the first valid one is returned.
– geowa4
Jul 6 '09 at 18:44
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How to check if current thread is not main thread
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Should one consider the latter as the safer option as there is no guarantee that any arbitrary thread is associated with a Looper (assuming that the main thread is always associated with a looper)?
– Janus Varm...
What is a segmentation fault?
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Sorry for the bump but just a side note... none of your examples necessarily cause a segfault, in fact it's just undefined behavior ;-)
– oldrinb
Sep 15 '12 at 3:01
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Should I use past or present tense in git commit messages? [closed]
...you're working on a team or on open source software, it is helpful if everyone sticks to that style for consistency. Even if you're working on a private project, and you're the only one who will ever see your git history, it's helpful to use the imperative mood because it establishes good habits tha...
In a storyboard, how do I make a custom cell for use with multiple controllers?
...eViewCell class.
This is important: The class of the cell does not have a one-to-one correlation with a particular view hierarchy. The view hierarchy is determined entirely by what's in the prototype cell that was registered with this particular controller.
Note, as well, that the cell's reuse ide...