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What's the need of array with zero elements?
...eof(*var) + extra, GFP_KERNEL);
This used to be not standard and was considered a hack (as Aniket said), but it was standardized in C99. The standard format for it now is:
struct bts_action {
u16 type;
u16 size;
u8 data[];
} __attribute__ ((packed)); /* Note: the __attribute__ is i...
Can I list-initialize a vector of move-only type?
...
Consider the in<T> idiom described on cpptruths (cpptruths.blogspot.com/2013/09/…). The idea is to determine lvalue/rvalue at run-time and then call move or copy-construction. in<T> will detect rvalue/lvalue even th...
AngularJS : The correct way of binding to a service properties
...
Consider some pros and cons of the second approach:
0 {{lastUpdated}} instead of {{timerData.lastUpdated}}, which could just as easily be {{timer.lastUpdated}}, which I might argue is more readable (but let's not argue... I'm ...
Does PostgreSQL support “accent insensitive” collations?
...hen creating unaccent extension on PostgreSQL
Among other things, it provides the function unaccent() you can use with your example (where LIKE seems not needed).
SELECT *
FROM users
WHERE unaccent(name) = unaccent('João');
Index
To use an index for that kind of query, create an index on t...
CSS media queries: max-width OR max-height
...a comma to specify two (or more) different rules:
@media screen and (max-width: 995px) , screen and (max-height: 700px) {
...
}
From https://developer.mozilla.org/en/CSS/Media_queries/
...In addition, you can combine multiple media queries in a comma-separated list; if any of the media quer...
Is gcc 4.8 or earlier buggy about regular expressions?
...eatures long before C++11 was finished and before many other compilers provided any support, and that feedback really helped improve C++11. This was a Good ThingTM.
The <regex> code was never in a useful state, but was added as a work-in-progress like many other bits of code at the time. It w...
Is a `=default` move constructor equivalent to a member-wise move constructor?
...copy/move
constructor is implicitly defined even if the implementation elided
its odr-use (3.2, 12.2). —end note ][...]
and paragraph 15 which says:
The implicitly-defined copy/move constructor for a non-union class X
performs a memberwise copy/move of its bases and members. [ Note:
...
std::function and std::bind: what are they, and when should they be used?
...a,b) := f(a, 4, b);
g is a "partial application" of the function f: the middle argument has already been specified, and there are two left to go.
You can use std::bind to get g:
auto g = bind(f, _1, 4, _2);
This is more concise than actually writing a functor class to do it.
There are further...
What Makes a Method Thread-safe? What are the rules?
Are there overall rules/guidelines for what makes a method thread-safe? I understand that there are probably a million one-off situations, but what about in general? Is it this simple?
...
When to use the brace-enclosed initializer?
...
I think the following could be a good guideline:
If the (single) value you are initializing with is intended to be the exact value of the object, use copy (=) initialization (because then in case of error, you'll never accidentally invoke an explicit constructor,...