大约有 46,000 项符合查询结果（耗时：0.0571秒） [XML]
Twitter Bootstrap modal: How to remove Slide down effect
... |
edited Apr 4 '14 at 20:59
digitalextremist
5,75522 gold badges3838 silver badges5858 bronze badges
...
What is the lifetime of a static variable in a C++ function?
...
264
The lifetime of function static variables begins the first time[0] the program flow encounters...
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
...eated if it wasn't done that way.
This way you can write fast code using 32-bit values in 64-bit mode without having to explicitly break dependencies all the time. Without this behaviour, every single 32-bit instruction in 64-bit mode would have to wait on something that happened before, even thoug...
SQL (MySQL) vs NoSQL (CouchDB) [closed]
...
|
edited Feb 20 '15 at 21:05
community wiki
...
How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
...
208
I had the same problem and solved it by creating an environment variable to be loaded every ti...
Can an Option in a Select tag carry multiple values?
...
One way to do this, first one an array, 2nd an object:
<select name="">
<option value='{"num_sequence":[0,1,2,3]}'>Option one</option>
<option value='{"foo":"bar","one":"two"}'>Option two</option>
</select&g...
How to expand folded package chain in Intellij IDEA?
...
2 Answers
2
Active
...
How do you delete an ActiveRecord object?
... like
user.destroy
User.find(15).destroy
User.destroy(15)
User.where(age: 20).destroy_all
User.destroy_all(age: 20)
Alternatively you can use delete and delete_all which won't enforce :before_destroy and :after_destroy callbacks or any dependent association options.
User.delete_all(condition:...