大约有 47,000 项符合查询结果（耗时：0.0514秒） [XML]
Block Comments in a Shell Script
...fore comment
: <<'END'
bla bla
blurfl
END
echo after comment
The ' and ' around the END delimiter are important, otherwise things inside the block like for example $(command) will be parsed and executed.
For an explanation, see this and this question.
...
Multiple columns index when using the declarative ORM extension of sqlalchemy
According to the documentation and the comments in the sqlalchemy.Column class, we should use the class sqlalchemy.schema.Index to specify an index that contains multiple columns.
...
How can I assign the output of a function to a variable using bash?
...
That's not 100% right. Command substitution always strips trailing newlines.
– TheBonsai
Nov 28 '09 at 17:36
7
...
When serving JavaScript files, is it better to use the application/javascript or application/x-javas
The whole question fits in the title. And to add some context: I'm not asking what is the best according to what the specs are saying, but rather what works the best given the mix of browsers deployed nowadays.
...
“Invalid form control” only in Google Chrome
The code below works well in Safari but in Chrome and Firefox the form will not submit. Chrome console logs the error An invalid form control with name='' is not focusable . Any ideas?
...
Get free disk space
...rom this code being copy-pasted from the original?
– Andrew Theken
Aug 13 '13 at 16:16
It doesn't need to end with "\\...
Regex to match a digit two or four times
...t;-- alternation: four digits or two
\d{2}(?:\d{2})? <-- two digits, and optionally two more
(?:\d{2}){1,2} <-- two digits, times one or two
share
|
improve this answer
|
...
Rails nested form with has_many :through, how to edit attributes of join model?
...
Rails 3 update: the form_for and field_for need <%= %> instead of <% %> if you're using Rails 3.
– Arcolye
Sep 29 '10 at 16:09
...
What's the difference between and
...
<?> and <? extends Object> are synonymous, as you'd expect.
There are a few cases with generics where extends Object is not actually redundant. For example, <T extends Object & Foo> will cause T to become Object ...
Change a column type from Date to DateTime during ROR migration
...f you're wondering why a single change method isn't used instead of the up and down methods, it's because the change method doesn't support the change_column migration definition.
– Dennis
Feb 25 '14 at 21:35
...