大约有 47,000 项符合查询结果（耗时：0.0797秒） [XML]
How to trace the path in a Breadth-First Search?
...
197
+50
You sho...
Returning value from called function in a shell script
...also true for some other shells.
Here's how to do each of those options:
1. Echo strings
lockdir="somedir"
testlock(){
retval=""
if mkdir "$lockdir"
then # Directory did not exist, but it was created successfully
echo >&2 "successfully acquired lock: $lockdir"
...
How can I multiply and divide using only bit shifting and adding?
...
14 Answers
14
Active
...
Filter rows which contain a certain string
...pe))
mpg cyl disp hp drat wt qsec vs am gear carb type
1 21.0 6 160.0 110 3.90 2.620 16.46 0 1 4 4 Mazda RX4
2 21.0 6 160.0 110 3.90 2.875 17.02 0 1 4 4 Mazda RX4 Wag
3 33.9 4 71.1 65 4.22 1.835 19.90 1 1 4 1 Toyota Corolla
4 21.5 4 120.1 ...
How to insert element into arrays at specific position?
...
214
array_slice() can be used to extract parts of the array, and the union array operator (+) can r...
With bash, how can I pipe standard error into another process?
...
172
There is also process substitution. Which makes a process substitute for a file.
You can send...
LINQ where vs takewhile
...
159
TakeWhile stops when the condition is false, Where continues and find all elements matching th...
What are the aspect ratios for all Android phone and tablet devices?
...
162
In case anyone wanted more of a visual reference:
Decimal approximations reference table:
...
How to check whether a pandas DataFrame is empty?
...
|
edited Dec 15 '17 at 17:37
Dave Thomas
1,38922 gold badges1010 silver badges1616 bronze badges
...
Get operating system info
...that, it sniffs your core operating system model, for example windows nt 5.1 as my own.
It then passes windows nt 5.1/i to Windows XP as the operating system.
Using: '/windows nt 5.1/i' => 'Windows XP', from an array.
You could say guesswork, or an approximation yet nonetheless pretty much ba...