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What's the best way to put a c-struct in an NSArray?
...change at runtime. You're specifying a C type, which always must be fully known. If it could get "larger" by referencing more data, then you would probably implement that with a pointer, and the @encode would describe the structure with that pointer, but not fully describe the pointed-to data, which...
What is a deadlock?
...
X starts to use A.
X and Y try to start using B
Y 'wins' and gets B first
now Y needs to use A
A is locked by X, which is waiting for Y
The best way to avoid deadlocks is to avoid having processes cross over in this way. Reduce the need to lock anything as much as you can.
In databases avoid mak...
Is there a difference between copy initialization and direct initialization?
...hy does it output that result?
Direct initialization
It first doesn't know anything about conversion. It will just try to call a constructor. In this case, the following constructor is available and is an exact match:
B(A const&)
There is no conversion, much less a user defined conversio...
Code-first vs Model/Database-first [closed]
...st a storage with no logic. EF will handle creation and you don't want to know how it does the job.
Manual changes to database will be most probably lost because your code defines the database.
Database first
Very popular if you have DB designed by DBAs, developed separately or if you have exist...
Cmake vs make sample codes?
...can be reduced as I showed earlier.
Internal Variables in CMake and Make
Now getting little advanced, in CMake we can set a compiler flag like the following,
set(CMAKE_C_FLAGS "-Wall")
Please find out more about CMake default variables in CMakeCache.txt file.
The CMake code above will be equiva...
Configuring user and password with Git Bash
...obal user.name "Bob"
$ git config --global user.email "bob@example.com"
Now if you try to push to the repository you will be asked for a username and password. Enter the login credentials you are trying to switch to. This problem normally pops up if you signed into GitHub on a browser using a dif...
Angularjs $q.all
...
I know, I would do the same actually.
– dfsq
Jan 24 '14 at 12:33
4
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What Makes a Method Thread-safe? What are the rules?
...reason why it is so hard to get right is because you must have a complete knowledge of the threading behaviour of the entire program in order to ensure its safety.
Again, look at my example: every method is trivial. It is the way that the methods interact with each other at a "global" level that m...
Difference between Repository and Service Layer?
...aravel conventions, and has some architectural problems for work I'm doing now. One thing I came across is that repositories "should not return ViewModels, DTO's, or query objects", but rather should return repository objects. I'm thinking through where services interact with repository objects via ...
Showing the stack trace from a running Python application
... a process will be running for a long time but gets stuck sometimes for unknown and irreproducible reasons. Its a bit hacky, and only works on unix (requires signals):
import code, traceback, signal
def debug(sig, frame):
"""Interrupt running process, and provide a python prompt for
inter...