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How do you configure an OpenFileDialog to select folders?
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I get the following error when trying to build your solution ... unfortunately c++ in not one of my strengths ... Error 1 cannot open include file 'afxres.h'.
– Ignacio Soler Garcia
Jun 17 '11 at 16:11
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cannot convert data (type interface {}) to type string: need type assertion
...]i to its value type, we have to do it individually:
// var items []i
for _, item := range items {
value, ok := item.(T)
dosomethingWith(value)
}
Performance
As for performance, it can be slower than direct access to the actual value as show in this stackoverflow answer.
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json_encode is returning NULL?
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If you have at least PHP 5.5, you can use json_last_error_msg(), which will return a string describing the problem.
If you don't have 5.5, but are on/above 5.3, you can use json_last_error() to see what the problem is.
It will return an integer, that you can use to identify ...
What does $_ mean in PowerShell?
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@Xalorous: Just because it doesn't produce an error doesn't mean it works: Get-ChildItem | Add-Member -Type NoteProperty -Name Bar -Value $_.Name -PassThru | Select Bar ... Well, it can work if you have a $_ in the scope where you're executing that pipeline. But that's v...
C++ catching all exceptions
...atch all exceptions in C++" is misleading. Try generating a divide by zero error inside the try block. You will see that it will generate an exception that is not caught, yet the code is clearly in C++. It would be more helpful to state that this will "catch all C++ exceptions" and then add some men...
Conditional compilation and framework targets
...Symbols>true</DebugSymbols>
Visual Studio 2010 also threw up an error because of the semi-colons, claiming they are illegal characters. The error message gave me a hint as I could see the pre-built constants seperated by commas, eventually followed by my "illegal" semi-colon. After some r...
string.ToLower() and string.ToLowerInvariant()
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answered Nov 4 '13 at 22:05
AaronLSAaronLS
33.7k1616 gold badges130130 silver badges189189 bronze badges
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Python threading.timer - repeat function every 'n' seconds
... not self.stopped.wait(0.5):
print("my thread")
# call a function
In the code that started the timer, you can then set the stopped event to stop the timer.
stopFlag = Event()
thread = MyThread(stopFlag)
thread.start()
# this will stop the timer
stopFlag.set()
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What is the GAC in .NET?
...to the GAC, the assembly must be strongly named.
Otherwise you get an error like this: Failure adding assembly to the cache:
Attempt to install an assembly without a strong name.
How to uninstall an assembly from GAC (as Administrator)
gacutil -u [Assembly Name], Version=1.0.0.0, Public...
Add params to given URL in Python
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@florian : At least in python 2.7 you then need to call urlencode as urllib.urlencode(query, doseq=True). Otherwise, parameters that existed in the original url are not preserved correctly (because they are returned as tuples from @parse_qs@
– rluba
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