大约有 16,800 项符合查询结果（耗时：0.0286秒） [XML]
Why are functions in Ocaml/F# not recursive by default?
...mpler code. However, superceded functions are made to use different names (f1, f2 etc.) which pollutes the scope and makes it possible to accidentally invoke the wrong "version" of a function. And there is now a discrepancy between implicitly-recursive fun-bound functions and non-recursive val-bound...
RESTful Authentication
...
GET /resource/1 HTTP/1.1
Host: example.com
Authorization: Bearer mF_9.B5f-4.1JqM
In short, this is very similar to a cookie and suffers to the same issues: not stateless, relying on HTTP transmission details, and subject to a lot of security weaknesses - including MiM and Replay - so is to be ...
PostgreSQL return result set as JSON array?
...o_json(row(array_agg(t.a),array_agg(t.b))) FROM t , though the result has "f1" and "f2" as labels instead of a and b.
– engineerX
Jun 3 '14 at 4:06
...
In what cases do I use malloc and/or new?
...ude <stdlib.h>
struct foo {
double d[5];
};
int main() {
foo *f1 = malloc(1); // error, no cast
foo *f2 = static_cast<foo*>(malloc(sizeof(foo)));
foo *f3 = static_cast<foo*>(malloc(1)); // No error, bad
}
It's worse than that though. If the type in question is POD (plai...
Multiple aggregations of the same column using pandas GroupBy.agg()
... there a pandas built-in way to apply two different aggregating functions f1, f2 to the same column df["returns"] , without having to call agg() multiple times?
...
How to send a “multipart/form-data” with requests in python?
...-Type': 'multipart/form-data; '
'boundary=c7cbfdd911b4e720f1dd8f479c50bc7f',
'Host': 'httpbin.org',
'User-Agent': 'python-requests/2.21.0'}
Better still, you can further control the filename, content type and additional headers for each part by using a tuple instead of a single ...
What is the (best) way to manage permissions for Docker shared volumes?
...s, find group name and add
GROUP=$(getent group $TARGET_GID | cut -d: -f1)
usermod -a -G $GROUP nobody
fi
I like this because I can easily modify group permissions on my host volumes and know that those updated permissions apply inside the docker container. This happens without any per...
Should I pass an std::function by const-reference?
...olution, this way your users can control how they call your function:
Foo f1{Object()}; // move the temporary, followed by a move in the constructor
Foo f2{some_object}; // copy the object, followed by a move in the constructor
Foo f3{std::move(some_object)}; // move the ob...
Making WPF applications look Metro-styled, even in Windows 7? (Window Chrome / Theming / Theme)
..."{StaticResource BlueColorBrush}" StrokeThickness="1" Stretch="None" Data="F1 M1,10 L3,10 M5,10 L7,10 M9,10 L11,10 M2,9 L2,11 M6,9 L6,11 M10,9 L10,11 M5,6 L7,6 M9,6 L11,6 M6,5 L6,7 M10,5 L10,7 M9,2 L11,2 M10,1 L10,3" />
</Grid>
...
What is Unicode, UTF-8, UTF-16?
...006E (n), and U+0303 (a combining tilde) forms ñ, but the code point U+00F1 forms ñ. They should look identical, but a simple counting algorithm will return 2 for the first example, 1 for the latter. This isn't necessarily wrong, but may not be the desired outcome either.
Comparing for equality:...