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undefined reference to `WinMain@16'
...
Building without that semi-documented flag one would have to more specifically tell the linker which subsystem value one desires, and some Windows API import libraries will then in general have to be specified explicitly:
C:\test> gnuc x.cpp -Wl,-subsystem,windows
C:\test> objdump -x a.ex...
How to get rid of the 'undeclared selector' warning
...ory method that should set an error property if the NSObject instance it's called on supports it. This is the code, and the code works as intended:
...
PHP - how to best determine if the current invocation is from CLI or web server?
...epends on checking against many possible values. The php-cgi binary can be called from the command line, from a shell script or as a cron job and (in most cases) these should also be treated as 'cli' but php_sapi_name() will return different values for these (note that this isn't the case with the p...
How to use glOrtho() in OpenGL?
...matrix and the result replaces the current matrix, as if glMultMatrix were called with the following matrix as its argument:
OpenGL documentation (my bold)
The numbers define the locations of the clipping planes (left, right, bottom, top, near and far).
The "normal" projection is a perspective proj...
What is N-Tier architecture?
...esentation, the application
processing and the data management are
logically separate processes. For
example, an application that uses
middleware to service data requests
between a user and a database employs
multi-tier architecture. The most
widespread use of "multi-tier
architectur...
Deep null checking, is there a better way?
...
Without the dot it becomes syntactically ambiguous with the conditional (A?B:C) operator. We try to avoid lexical constructs that require us to "look ahead" arbitrarily far in the token stream. (Though, unfortunately, there already are such constructs in C#; w...
What is the use of GO in SQL Server Management Studio & Transact SQL?
...ks! However then what is the point of the GO statement? This may sound stupid but what does 'batch of code' mean? msdn says after GO the variables' lifespan expire. Sounds nothing to do with transaction commitment right? Is there any circumstances where I should keep the GO statement in my scripts?
...
How can you use optional parameters in C#?
...h(object o in theObjects)
{
// Something with the Objects…
}
}
Called like...
DoSomething(this, that, theOther);
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When to use ref and when it is not necessary in C#
... or C++. Changes to the value of the parameter itself won't be seen by the caller, but changes in the object which the reference points to will be seen.
When a parameter (of any kind) is passed by reference, that means that any changes to the parameter are seen by the caller - changes to the parame...
Accessing dict keys like an attribute?
...n the AttrDict() instance we are instantiating (as we are in __init__).
By calling super()'s __init__() method we made sure that it (already) behaves exactly like a dictionary, since that function calls all the dictionary instantiation code.
One reason why Python doesn't provide this functionality ...