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Can I assume (bool)true == (int)1 for any C++ compiler?
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Yes. The casts are redundant. In your expression:
true == 1
Integral promotion applies and the bool value will be promoted to an int and this promotion must yield 1.
Reference: 4.7 [conv.integral] / 4: If the source type is bool....
What is the difference between a strongly typed language and a statically typed language?
...ecause any pointer type is convertible to any other pointer type simply by casting. Pascal was intended to be strongly typed, but an oversight in the design (untagged variant records) introduced a loophole into the type system, so technically it is weakly typed.
Examples of truly strongly typed lan...
Disable cache for some images
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A common and simple solution to this problem that feels like a hack but is fairly portable is to add a randomly generated query string to each request for the dynamic image.
So, for example -
<img src="image.png" />
Would be...
Android and XMPP: Currently available solutions [closed]
Which XMPP library would be the best choice nowadays for Android development?
7 Answers
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Strange behavior for Map, parseInt [duplicate]
...sort of. You may use [...].map(parseFloat) or [...].map(Number). Both will cast strings to numbers in the given array. However parseFloat and Number work slightly different than parseInt: both will cast floats as well as integers, while Number will turn strings that start with digits and have other ...
Why don't structs support inheritance?
... The sensible solution to that problem would be to disallow the cast form Base[] to Detived[]. Just like casting from short[] to int[] is forbidden, although casting from short to int is possible.
– Niki
Aug 3 '09 at 16:34
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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Android应用开发性能优化完全分析1 背景其实有点不想写这篇文章的，但是又想写，有些矛盾。不想写的原因是随便上网一搜一堆关于性能的建议，感觉大家你一总结、我一总结的...1 背景
其实有点不想写这篇文章的，但是又想...
Check if value exists in Postgres array
...d that part of manual. This works great. It has a side effect of automatic casting. Ex: SELECT 1::smallint = ANY ('{1,2,3}'::int[]) works. Just make sure to put ANY() on the right side of expression.
– Mike Starov
Jun 27 '12 at 23:52
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How do I assign an alias to a function name in C++?
...ld_fn_name;
If this function has multiple overloads you should use static_cast:
const auto& new_fn_name = static_cast<OVERLOADED_FN_TYPE>(old_fn_name);
Example: there are two overloads of function std::stoi
int stoi (const string&, size_t*, int);
int stoi (const wstring&, size...
How to convert DateTime to VarChar
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@Atishay "only supported when casting from character data to datetime or smalldatetime". See the footnotes 6 and 7 at docs.microsoft.com/de-de/sql/t-sql/functions/…
– Colin
Sep 4 '17 at 11:15
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