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How is “int* ptr = int()” value initialization not illegal?
...r because it also tosses the benefit of extra compile-time checks into the mix.
– Jamin Grey
Feb 27 '13 at 1:07
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What is opinionated software?
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I agree with altCognito. .NET encourages the developer to mix Model and View in WinForms apps by making it brain-dead easy to put business logic in methods generated by the button click event, for example. In this way, Microsoft indirectly encourages short-sighted developers to lock...
What is the python “with” statement designed for?
...y add it for the sake of completeness: the with statement simplifies exception handling by encapsulating common preparation and cleanup tasks in so-called context managers. More details can be found in PEP 343. For instance, the open statement is a context manager in itself, which lets you open a fi...
lock(new object()) — Cargo cult or some crazy “language special case”?
...n once at a time
// e.g. comands on the Mars Rover, or programs on iOS pre 4 / 5 ??
}
}
and thought he could cut the number of lines.
I'd be very worried if that were the case though...
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Convert a String In C++ To Upper Case
...3 -march=native on a Core2Duo (Merom). The same string of 120 characters (mixed lowercase and non-lowercase ASCII), converted in a loop 40M times (with no cross-file inlining, so the compiler can't optimize away or hoist any of it out of the loop). Same source and dest buffers, so no malloc overhe...
How to apply an XSLT Stylesheet in C#
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I prefer this solution instead of the overloaded version because you are able to set XmlReaderSettings and XmlWriterSettings using DTD, Schemas, etc.
– Alina B.
Oct 11 '14 at 6:09
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Has anyone actually implemented a Fibonacci-Heap efficiently?
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The Boost C++ libraries include an implementation of Fibonacci heaps in boost/pending/fibonacci_heap.hpp. This file has apparently been in pending/ for years and by my projections will never be accepted. Also, there have been bugs in that implementation, which were fix...
Why use static_cast(x) instead of (int)x?
...ynamic_cast, as those would indicate places that can be redesigned. C-cast mixes in all together and doesn't give you the reason for casting.
– Dragan
May 18 at 13:58
add a co...
how to check the dtype of a column in python pandas
...('<M8[ns]'), 'is_int64 = False')
It will be misleading in the case of mixed type of data in single column:
df2 = pd.DataFrame({'data': [12, pd.Timestamp('2013-01-02')]},
index = ['A', 'B'])
for col in df2.columns:
df2[col].dtype, 'is_int64 = %s' % isinstance(df2.loc['A', ...
When to use NSInteger vs. int
When should I be using NSInteger vs. int when developing for iOS? I see in the Apple sample code they use NSInteger (or NSUInteger ) when passing a value as an argument to a function or returning a value from a function.
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