大约有 43,000 项符合查询结果（耗时：0.0672秒） [XML]
How do Trigonometric functions work?
...ndard interval. For starters, you could reduce angles to be between 0 and 360 degrees. But by using a few identities, you realize you could get by with less. If you calculate sines and cosines for angles between 0 and 45 degrees, you can bootstrap your way to calculating all trig functions for all...
Git update submodules recursively
...
drewagdrewag
85.4k2727 gold badges131131 silver badges126126 bronze badges
1
...
bash HISTSIZE vs. HISTFILESIZE?
...session, you start over at 1 with a HISTFILE of HISTFILESIZE=10.
Example 3:
HISTFILESIZE=5 and HISTSIZE=10
You start your session.
Your HISTFILE (file that stores your bash command history), is truncated to contain at most HISTFILESIZE=5 lines.
You write 50 lines.
At the end of your 50 command...
Breaking a list into multiple columns in Latex
... |
edited Feb 10 '13 at 21:31
worldsayshi
1,44999 silver badges2727 bronze badges
answered Sep 9 ...
How to sum up an array of integers in C#
...
Provided that you can use .NET 3.5 (or newer) and LINQ, try
int sum = arr.Sum();
share
|
improve this answer
|
follow
...
How to “pretty” format JSON output in Ruby on Rails
...ns of JSON. For example:
require 'json'
my_object = { :array => [1, 2, 3, { :sample => "hash"} ], :foo => "bar" }
puts JSON.pretty_generate(my_object)
Which gets you:
{
"array": [
1,
2,
3,
{
"sample": "hash"
}
],
"foo": "bar"
}
...
How to find the size of an array in postgresql
...in a single or multidimensional array. So select cardinality(ARRAY[[1,2], [3,4]]); would return 4, whereas select array_length(ARRAY[[1,2], [3,4]], 1) would return 2. If you're counting the first dimension, array_length is a safer bet.
– Roshambo
Sep 20 '17 at ...
Return type of '?:' (ternary conditional operator)
...
3 Answers
3
Active
...
How can I split a shell command over multiple lines when using an IF statement?
...
|
edited Jul 13 at 16:27
answered Sep 3 '13 at 19:22
...