大约有 45,000 项符合查询结果（耗时：0.0468秒） [XML]
How to execute a Ruby script in Terminal?
...
251
Just call: ruby your_program.rb
or
start your program with #!/usr/bin/env ruby,
make your f...
How to use JavaScript variables in jQuery selectors?
...
245
var name = this.name;
$("input[name=" + name + "]").hide();
OR you can do something like thi...
Compile time string hashing
...s is a little bit late, but I succeeded in implementing a compile-time CRC32 function with the use of constexpr. The problem with it is that at the time of writing, it only works with GCC and not MSVC nor Intel compiler.
Here is the code snippet:
// CRC32 Table (zlib polynomial)
static constexpr u...
How to check if a number is a power of 2
Today I needed a simple algorithm for checking if a number is a power of 2.
25 Answers
...
What is the most efficient way to concatenate N arrays?
...
20 Answers
20
Active
...
Does Swift have documentation generation support?
...
12 Answers
12
Active
...
Update Eclipse with Android development tools v. 23
I updated Eclipse with the new SDK tools (rev. 23), but now when Eclipse starts I receive the error:
43 Answers
...
Jackson databind enum case insensitive
...
In version 2.4.0 you can register a custom serializer for all the Enum types (link to the github issue). Also you can replace the standard Enum deserializer on your own that will be aware about the Enum type. Here is an example:
public...
What does the Ellipsis object do?
...is is an object that can appear in slice notation. For example:
myList[1:2, ..., 0]
Its interpretation is purely up to whatever implements the __getitem__ function and sees Ellipsis objects there, but its main (and intended) use is in the numpy third-party library, which adds a multidimensional ...
Filtering a list based on a list of booleans
...ss:
>>> from itertools import compress
>>> list_a = [1, 2, 4, 6]
>>> fil = [True, False, True, False]
>>> list(compress(list_a, fil))
[1, 4]
Timing comparisons(py3.x):
>>> list_a = [1, 2, 4, 6]
>>> fil = [True, False, True, False]
>>>...