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Get a specific bit from byte
...f-two than the one to its right, bit-shifting to the left is equivalent to doubling the number once for each place that is shifted, equivalent to multiplying the number by 2^x. In your example, looking for the fourth bit, we perform:
1 (2^0) << (4-1) == 8 (2^3)
00000001 &l...
REST, HTTP DELETE and parameters
...prevents the API from performing the requested operation.
As Alex said (I don't know who downvoted him, he is correct), this should be handled in the UI, because a RESTful service as such just processes requests and should be therefore stateless (i.e. it must not rely on confirmations by holding an...
Why does one often see “null != variable” instead of “variable != null” in C#?
...
It's a hold-over from C. In C, if you either use a bad compiler or don't have warnings turned up high enough, this will compile with no warning whatsoever (and is indeed legal code):
// Probably wrong
if (x = 5)
when you actually probably meant
if (x == 5)
You can work around this in C...
Should I call Close() or Dispose() for stream objects?
... called Close() . Now that confuses me, as to what should I call once I'm done with objects? What if I call both?
6 Answe...
How to send data to local clipboard from a remote SSH session
...
I often to this in vim. To do so, select what you want to copy in visual mode, then type: :'<,'>w !ssh desktop pbcopy
– Mike Brennan
Nov 30 '12 at 5:04
...
How to create a shared library with cmake?
...a new library target. Please avoid the use of file(GLOB ...). This feature does not provide attended mastery of the compilation process. If you are lazy, copy-paste output of ls -1 sources/*.cpp :
add_library(mylib SHARED
sources/animation.cpp
sources/buffers.cpp
[...]
)
Set VERSION p...
How to write iOS app purely in C
...nt UIApplicationMain(int, ...);
// Entry point of the application. If you don't know what this is by now,
// then you probably shouldn't be reading the rest of this post.
int main(int argc, char *argv[])
{
// Create an @autoreleasepool, using the old-stye API.
// Note that while NSAutorel...
Batch file. Delete all files and folders in a directory
... edited May 23 '14 at 12:51
DontVoteMeDown
18.9k99 gold badges6161 silver badges9393 bronze badges
answered Jul 26 '11 at 21:04
...
WebSockets vs. Server-Sent events/EventSource
...ion that could benefit from SSE.
In practice since everything that can be done with SSE can also be done with Websockets, Websockets is getting a lot more attention and love, and many more browsers support Websockets than SSE.
However, it can be overkill for some types of application, and the back...
Does PNG contain EXIF data like JPG?
...emains to be seen if encoders-decoders begin to support it.
Original: PNG does not embed EXIF info. It allows, however, to embed metadata "chunks" inside the image. Some of the standardized chunks correspond to a few EXIF attributes (physical dimensions, timestamp). And it's also possible to store ...