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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....
NPM - How to fix “No readme data”
...t fix it, you should write something inside it; at least the project title and a brief description is good for people! But for NPM, one byte may be enough...
Doing so should stop showing the warnings.
Also, when you read that warning, ensure that the problem is not related to a 3rd party package.
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Can someone explain this 'double negative' trick? [duplicate]
... find it highly intuitive to know what's "falsey" and what's "truthy" when cast to a Boolean.
– Chris
Jul 30 '13 at 3:15
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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...
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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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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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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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 ...
Nginx缓存解决方案：SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术
... ngx.exit(ngx.HTTP_SERVICE_UNAVAILABLE)
end
if res == nil and flags == nil and err == nil then
ngx.exit(ngx.HTTP_NOT_FOUND)
end
ngx.print(res)
elseif method == "PUT" then
local value = ngx.req.get_body_data()
local expire = ngx.var.arg_expire or 86400...