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Positioning MKMapView to show multiple annotations at once
... further because there's no need to convert to MKCoordinateRegion – just call setVisibleMapRect: on your MKMapView with the MKMapRect that you create here.
– lensovet
Jan 26 '13 at 9:51
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Parallel.ForEach vs Task.Factory.StartNew
...h tasks started via Parallel.ForEach to the wrapper task? So that when you call .Wait() on a wrapper task it hangs until tasks running in parallel are completed?
– Konstantin Tarkus
May 29 '12 at 0:29
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Reverse engineering from an APK file to a project
...ool to extract all the (compiled) classes on the DEX to a JAR.
There's one called dex2jar, which is made by a Chinese student.
Then, you can use JD-GUI to decompile the classes in the JAR to source code. The resulting source code should be quite readable, as dex2jar applies some optimizations.
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Creating and throwing new exception
...
To call a specific exception such as FileNotFoundException use this format
if (-not (Test-Path $file))
{
throw [System.IO.FileNotFoundException] "$file not found."
}
To throw a general exception use the throw command fol...
JSON.parse vs. eval()
...ript (including returned values from servlets or other web services you've called). You cannot guarantee users have not entered malicious JavaScript either directly into your client app, or indirectly because of unvalidated data stored in the server's database and then passed on to your program via ...
When should I use malloc in C and when don't I?
...Your are right. You can do that. When you use malloc() the memory is dynamically allocated at run time, so you need not fix array size at compile time also u can make it grow or shrink using realloc() None of these things can be done when you do: char some_memory[] = "Hello"; Here even though you ca...
Pointers vs. values in parameters and return values
... other arguments. It's not unusual for methods to modify the thing they're called on, or for named types to be large structs, so the guidance is to default to pointers except in rare cases.
Jeff Hodges' copyfighter tool automatically searches for non-tiny receivers passed by value.
Some situatio...
When saving, how can you check if a field has changed?
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@callum so that if you make changes to the object, save it, then makes additional changes and call save() on it AGAIN, it will still work correctly.
– philfreo
Mar 14 '12 at 22:57
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Multiprocessing - Pipe vs Queue
...) as a bonus; JoinableQueue() accounts for tasks when queue.task_done() is called (it doesn't even know about the specific task, it just counts unfinished tasks in the queue), so that queue.join() knows the work is finished.
The code for each at bottom of this answer...
mpenning@mpenning-T61:~$ py...
What is a Memory Heap?
...y simple explanation is that the heap is the portion of memory where dynamically allocated memory resides (i.e. memory allocated via malloc). Memory allocated from the heap will remain allocated until one of the following occurs:
The memory is free'd
The program terminates
If all references to ...