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Constants in Objective-C
...MY_CONST_2 25. The result is that you may very well end up with a compiler error when it tries to compile 5_2. Do not use #define for constants. Use const for constants.
– ArtOfWarfare
Apr 24 '13 at 14:03
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rails 3.1.0 ActionView::Template::Error (application.css isn't precompiled)
...and there are missing precompiled files you will get an "AssetNoPrecompiledError" indicating the name of the missing file.
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Getting “bytes.Buffer does not implement io.Writer” error message
...fer implements io.Writer is
func (b *Buffer) Write(p []byte) (n int, err error) {
...
}
// io.Writer definition
type Writer interface {
Write(p []byte) (n int, err error)
}
It's b *Buffer, not b Buffer. (I also think it is weird for we can call a method by a variable or its pointer, but ...
Catching an exception while using a Python 'with' statement
... with open( "a.txt" ) as f :
print f.readlines()
except EnvironmentError: # parent of IOError, OSError *and* WindowsError where available
print 'oops'
If you want different handling for errors from the open call vs the working code you could do:
try:
f = open('foo.txt')
except IOE...
Reactjs: Unexpected token '
...as writing a simple component to display
li tag and came across this error:
17 Answers
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Why are we not to throw these exceptions?
...part makes little sense to me. Sure, you should rather avoid causing these errors to begin with, but when you e.g. write an IList implementation, it's not in your power to affect the indices requested, it's the caller's logic mistake when an index is invalid, and you are can only inform them of this...
Moving decimal places over in a double
...se double or float, you should use rounding or expect to see some rounding errors. If you can't do this, use BigDecimal.
The problem you have is that 0.1 is not an exact representation, and by performing the calculation twice, you are compounding that error.
However, 100 can be represented accurat...
Error “can't use subversion command line client : svn” when opening android project checked out from
...N client (can't manage to do it from within Android Studio), then get this error message after importing the project to Android Studio:
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A valid provisioning profile for this executable was not found for debug mode
I am getting this error while I am trying to debug my app on device.
42 Answers
42
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Why use static_cast(x) instead of (int)x?
...Other;
pOther = static_cast<CMyOtherStuff*>(pSomething); // Compiler error: Can't convert
pOther = (CMyOtherStuff*)(pSomething); // No compiler error.
// Same as reinterpret_cast<>
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