大约有 43,000 项符合查询结果（耗时：0.0379秒） [XML]
Blocks and yields in Ruby
... I agree. I don't think I knew half of the stuff explained until I read it.
– theIV
Jun 18 '10 at 1:58
1
...
How do I see active SQL Server connections?
... See who is connected to the database.
-- Analyse what each spid is doing, reads and writes.
-- If safe you can copy and paste the killcommand - last column.
-- Marcelo Miorelli
-- 18-july-2017 - London (UK)
-- Tested on SQL Server 2016.
--============================================================...
How do you do a ‘Pause’ with PowerShell 2.0?
...offer a new variation that I believe provides the best utility.
<1> ReadKey (System.Console)
write-host "Press any key to continue..."
[void][System.Console]::ReadKey($true)
Advantage: Accepts any key but properly excludes Shift, Alt, Ctrl modifier keys.
Disadvantage: Does not work in PS-...
Bash variable scope
...and while are in same subshell):
#!/bin/bash
cat /tmp/randomFile | (while read line
do
LINE="$LINE $line"
done && echo $LINE )
share
|
improve this answer
|
fol...
How to study design patterns? [closed]
I have read around 4-5 books on design patterns, but still I don't feel I have come closer to intermediate level in design patterns?
...
What are the git concepts of HEAD, master, origin?
...ole repository, or of a specific branch or tag? This is so confusing. I've read so many tutorials on this and things like branching/merging, but still can't wrap my head around it.
...
Are Swift variables atomic?
...es swift_retain from libswift_stdlib_core and, apparently, does not have thread safety built in.
We can speculate that additional keywords (similar to @lazy) might be introduced later on.
Update 07/20/15: according to this blogpost on singletons swift environment can make certain cases thread saf...
Download file from web in Python 3
...ting a program that will download a .jar (java) file from a web server, by reading the URL that is specified in the .jad file of the same game/application. I'm using Python 3.2.1
...
CSV file written with Python has blank lines between each row
This code reads thefile.csv , makes changes, and writes results to thefile_subset1 .
9 Answers
...
How to assign a heredoc value to a variable in Bash?
...oid a useless use of cat and handle mismatched quotes better with this:
$ read -r -d '' VAR <<'EOF'
abc'asdf"
$(dont-execute-this)
foo"bar"''
EOF
If you don't quote the variable when you echo it, newlines are lost. Quoting it preserves them:
$ echo "$VAR"
abc'asdf"
$(dont-execute-this)
foo...