大约有 44,000 项符合查询结果（耗时：0.0507秒） [XML]
Cartesian product of x and y array points into single array of 2D points
... following sections, I include some tests of other alternatives. These are now somewhat out of date, but rather than duplicate effort, I've decided to leave them here out of historical interest. For up-to-date tests, see Panzer's answer, as well as Nico Schlömer's.
Tests against alternatives
Here...
How do I remove the passphrase for the SSH key without having to create a new key?
...t a passphrase when creating a new SSH key on my laptop. But, as I realise now, this is quite painful when you are trying to commit ( Git and SVN ) to a remote location over SSH many times in an hour.
...
parseInt(null, 24) === 23… wait, what?
...isn't a base-24 numeric string in entirety, but "n" is: it's decimal 23.
Now, parsing stops after the decimal 23 is pulled out, because "u" isn't found in the base-24 system:
If S contains any character that is
not a radix-R digit, then let Z be the
substring of S consisting of all
chara...
Understanding Python super() with __init__() methods [duplicate]
..."UserDependency init'ed")
super(UserDependency, self).__init__()
Now remember, ChildB uses super, ChildA does not:
class UserA(ChildA, UserDependency):
def __init__(self):
print("UserA init'ed")
super(UserA, self).__init__()
class UserB(ChildB, UserDependency):
de...
ES6 class variable alternatives
...
2018 update:
There is now a stage 3 proposal - I am looking forward to make this answer obsolete in a few months.
In the meantime anyone using TypeScript or babel can use the syntax:
varName = value
Inside a class declaration/expression body and ...
Practical use of `stackalloc` keyword
...only be stored into a pointer local variable. As of C# 7.2, stackalloc can now be used as part of an expression and can target a span, and that can be done without using the unsafe keyword. Thus, instead of writing
Span<byte> bytes;
unsafe
{
byte* tmp = stackalloc byte[length];
bytes = ne...
Declaring and initializing variables within Java switches
...on is.)
If you comment out the value = 2; assignment, the compiler still knows which variable you're referring to, but you won't have gone through any execution path which assigns it a value, which is why you get an error as you would when you try to read any other not-definitely-assigned local var...
How to calculate the bounding box for a given lat/lng location?
I have given a location defined by latitude and longitude.
Now i want to calculate a bounding box within e.g. 10 kilometers of that point.
...
How to undo another user’s checkout in TFS?
... it out from the current directory. The command line you give works for me now.
– dumbledad
Oct 28 '12 at 16:14
1
...
Node.js Best Practice Exception Handling
...
Update: Joyent now has their own guide. The following information is more of a summary:
Safely "throwing" errors
Ideally we'd like to avoid uncaught errors as much as possible, as such, instead of literally throwing the error, we can inst...