大约有 47,000 项符合查询结果（耗时：0.0464秒） [XML]
Most efficient way to reverse a numpy array
... something like this:
arr = np.array(some_sequence)
reversed_arr = arr[::-1]
do_something(arr)
look_at(reversed_arr)
do_something_else(arr)
look_at(reversed_arr)
I'm not a numpy expert, but this seems like it would be the fastest way to do things in numpy. If this is what you are already doing,...
Transform DateTime into simple Date in Ruby on Rails
...
167
DateTime#to_date does exist with ActiveSupport:
$ irb
>> DateTime.new.to_date
NoMethodE...
How can I get the Typescript compiler to output the compiled js to a different directory?
...
138
Use the option --outDir on tsc (configured within the File Watcher in IntelliJ)
From the comm...
How to return a part of an array in Ruby?
...
195
Yes, Ruby has very similar array-slicing syntax to Python. Here is the ri documentation for th...
Regex to check whether a string contains only numbers [duplicate]
I get false on both "123" and "123f" . I would like to check if the hash only contains numbers. Did I miss something?
21...
Is there StartsWith or Contains in t sql with variables?
...
123
StartsWith
a) left(@edition, 15) = 'Express Edition'
b) charindex('Express Edition', @edition...
Most efficient way to make the first character of a String lower case?
...
11 Answers
11
Active
...
How do I determine scrollHeight?
...
|
edited Jun 12 '15 at 11:57
groovecoder
1,3031515 silver badges2525 bronze badges
answered...
Add a new element to an array without specifying the index in Bash
...
1599
Yes there is:
ARRAY=()
ARRAY+=('foo')
ARRAY+=('bar')
Bash Reference Manual:
In the con...
jQuery: checking if the value of a field is null (empty)
...
170
The value of a field can not be null, it's always a string value.
The code will check if the ...