大约有 1,800 项符合查询结果（耗时：0.0198秒） [XML]
Does ruby have real multithreading?
...ple Ruby program which uses 3 threads using Ruby 2.1.0:
(jalcazar@mac ~)$ ps -M 69877
USER PID TT %CPU STAT PRI STIME UTIME COMMAND
jalcazar 69877 s002 0.0 S 31T 0:00.01 0:00.04 /Users/jalcazar/.rvm/rubies/ruby-2.1.0/bin/ruby threads.rb
69877 0.0 S 31T 0:00...
Django ManyToMany filter()
...ing SQL that looks something like:
SELECT * FROM users WHERE id IN (SELECT user_id FROM userzones WHERE zone_id IN (1,2,3))
which is nice because it doesn't have any intermediate joins that could cause duplicate users to be returned
...
SQL Server equivalent to Oracle's CREATE OR REPLACE VIEW
...
For SQL Server 2016 SP1+, see answer by lad2025.
– MBWise
Nov 15 '17 at 10:15
|
show 2 more comments
...
Can Powershell Run Commands in Parallel?
...easy to invoke a separate script file. Just use Start-Job -FilePath script.ps1 -ArgumentList $_
– Chad Zawistowski
Jun 16 '16 at 22:54
...
How to output something in PowerShell
..., if you call the script with redirected output, something like yourscript.ps1 > out.txt, you will get test2 on the screen test1\ntest3\n in the "out.txt".
Note that "test3" and the Write-Output line will always append a new line to your text and there is no way in PowerShell to stop this (that ...
Getting raw SQL query string from PDO prepared statements
...seen as a string: string(115) "INSERT INTO tokens (token_type, token_hash, user_id) VALUES ('resetpassword', hzFs5RLMpKwTeShTjP9AkTA2jtxXls86, 1);"
– Kerwin Sneijders
Sep 10 '18 at 0:34
...
How to debug a bash script? [closed]
...sts after they are expanded and before they are executed. The value of the PS4 variable is expanded and the resultant value is printed before the command and its expanded arguments.
That much does not seem to indicate different behaviour at all. I don't see any other relevant references to '-x' ...
Which is faster in Python: x**.5 or math.sqrt(x)?
...port math
N = 1000000
%%timeit
for i in range(N):
z=i**.5
10 loops, best of 3: 156 ms per loop
%%timeit
for i in range(N):
z=math.sqrt(i)
10 loops, best of 3: 91.1 ms per loop
Using Python 3.6.9 (notebook).
...
Copying files from Docker container to host
...gen is the container name I got from the following command:
$ sudo docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
1b4ad9311e93 bamos/openface "/bin/bash" 33 min...
Exploring Docker container's file system
...r /bin/bash
see Docker command line documentation
Alternate method 1
Snapshotting
You can evaluate container filesystem this way:
# find ID of your running container:
docker ps
# create image (snapshot) from container filesystem
docker commit 12345678904b5 mysnapshot
# explore this filesystem...