大约有 3,000 项符合查询结果（耗时：0.0238秒） [XML]
Rails: create on has_one association
...Alternatively, if you do not want to trigger delete callback
Shop.create(user_id: user.id, title: 'Some unique title')
This thread might be helpful. Click here
share
|
improve this answer
...
Using sed and grep/egrep to search and replace
...
My use case was I wanted to replace
foo:/Drive_Letter with foo:/bar/baz/xyz
In my case I was able to do it with the following code.
I was in the same directory location where there were bulk of files.
find . -name "*.library" -print0 | xargs -0 sed -i '' -e 's/foo:\/Driv...
Is it a good practice to use try-except-else in Python?
...... except: ... else: ... structure makes for very readable code:
try:
raw_value = int(input())
except ValueError:
value = some_processed_value
else: # no error occured
value = process_value(raw_value)
Compare to how it might work in other languages:
raw_value = input()
if valid_number(...
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
...
CSS: how to add white space before element's content?
... to be colored, you might consider adding a thick left border to the first letter. (I'd almost-but-not-quite say "instead", because the indent can be an issue if you use both. But it feels dirty to me to rely solely on the border to indent.) You can specify how far away, and how wide, the color i...
How to change variables value while debugging with LLDB in Xcode?
...ram context, using variables currently in scope. This command
takes 'raw' input (no need to quote stuff).
Syntax: expression --
Command Options Usage: expression [-f ] [-G ]
[-d ] [-u ] -- expression [-o] [-d
] [-u ] -- expression
-G <gdb-format> ( --gdb-...
Razor doesn't understand unclosed html tags
...tic HTML encoding that Razor does if you're trying to output HTML):
@Html.Raw("<html>")
(Html.Raw reference from MS - http://msdn.microsoft.com/en-us/library/gg568896(v=vs.111).aspx)
share
|
...
PHP “php://input” vs $_POST
...
The reason is that php://input returns all the raw data after the HTTP-headers of the request, regardless of the content type.
The PHP superglobal $_POST, only is supposed to wrap data that is either
application/x-www-form-urlencoded (standard content type for simple ...
Create a List of primitive int?
...s automatically boxed to Integer wrapper type. But it is a bad idea to use raw type lists, or for any generic type for that matter, in newer code.
I can add anything into this list.
Of course, that is the dis-advantage of using raw type. You can have Cat, Dog, Tiger, Dinosaur, all in one cont...
What is the difference between 'E', 'T', and '?' for Java generics?
...ames, etc. E.g. Foo<hello_world> is valid. Using a single upper-case letter is a naming standard, which is recommended in the Java Language Specification: "Type variable names should be pithy (single character if possible) yet evocative, and should not include lower case letters. This makes it...