大约有 18,500 项符合查询结果（耗时：0.0257秒） [XML]
Unittest setUp/tearDown for several tests
... bet is probably going to be to create your own derived TestSuite and override run(). All other calls would be handled by the parent, and run would call your setup and teardown code around a call up to the parent's run method.
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Postgresql: Conditionally unique constraint
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it has already been said that PG doesn't define a partial (ie conditional) UNIQUE constraint. Also documentation says that the preferred way to add a unique constraint to a table is ADD CONSTRAINT Unique Indexes
The preferred way to add a uniq...
Solutions for INSERT OR UPDATE on SQL Server
...Insert-or-update you can easily
get primary key violation.
Solutions provided by @Beau Crawford & @Esteban show general idea but error-prone.
To avoid deadlocks and PK violations you can use something like this:
begin tran
if exists (select * from table with (updlock,serializable) where ke...
How can I add an empty directory to a Git repository?
... stay (almost) empty (in the repository) is to create a .gitignore file inside that directory that contains these four lines:
# Ignore everything in this directory
*
# Except this file
!.gitignore
Then you don't have to get the order right the way that you have to do in m104's solution.
This als...
Collections.emptyList() returns a List?
... trouble navigating Java's rule for inferring generic type parameters. Consider the following class, which has an optional list parameter:
...
python: how to send mail with TO, CC and BCC?
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Key thing is to add the recipients as a list of email ids in your sendmail call.
import smtplib
from email.mime.multipart import MIMEMultipart
me = "user63503@gmail.com"
to = "someone@gmail.com"
cc = "anotherperson@gmail.com,someone@yahoo.com"
bcc = "bccperson1@gmail.com,bccpe...
Git: copy all files in a directory from another branch
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This has a very weird side effect. It copies dirname over, but it also copies any files that are in the .gitignore of the master branch. Any idea why that is?
– Milimetric
Feb 24 '13 at 13:08
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What is the difference between `git fetch origin` and `git remote update origin`?
...to git fetch --all.
I should add the caveat that fetch and remote update didn't actually use the same codepath until v1.6.6.1 (released December 23 2009). Even before that, though, they did essentially the same thing, just using different code (possibly behaving slightly differently in corner cases...
Regex for string contains?
...ord boundary", that is, a point between characters where a word can be considered to start or end. For example, since spaces are used to separate words, there will be a word boundary on either side of a space.
If you want to check for it as part of the word, it's just Test, again with appropriate f...
Match whole string
...Jake if your string was "abc def ghi" then /^abc$/ would not work. ex: jsfiddle.net/XUyAc
– matchew
Jun 9 '11 at 20:41
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