大约有 40,000 项符合查询结果（耗时：0.0486秒） [XML]
How do you delete an ActiveRecord object?
...
It's destroy and destroy_all methods, 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 :afte...
Advances social tools app with cool UI - Koded Apps - Kodular Community
...ash {
display: none;
}
// This script is inlined in `_discourse_splash.html.erb
const DELAY_TARGET = 2000;
const POLLING_INTERVAL = 50;
const splashSvgTemplate = document.querySelector(".splash-svg-template");
const splashTemplateClone = splashSvgTemplate.content.cloneNode(true...
Circular gradient in android
...ource with a px or dp value, like: android:gradientRadius="@dimen/gradient_radius"
– Bolling
Mar 3 '15 at 21:20
2
...
libxml/tree.h no such file or directory
...ude/libxml2" to the Header Search Path (XCode 4.2), than it says that " "_OBJC_METACLASS_$_UIResponder", referenced from: _OBJC_METACLASS_$_D2GAppDelegate in MyDemoAppDelegate.o ld: symbol(s) not found for architecture i386". What can i do?
– NicTesla
A...
Draw line in UIView
...Path(context); before CGContextMoveToPoint(...);?
– i_am_jorf
Nov 9 '11 at 18:38
37
Using a view ...
How to exit a function in bash
...he entire shell.
# So we (ab)use a different feature. :)
fail() { : "${__fail_fast:?$1}"; }
nested-func() {
try-this || fail "This didn't work"
try-that || fail "That didn't work"
}
nested-func
}
Trying it out:
$ do-something-complex
try-this: command not found
bash: __fail...
Determine whether an array contains a value [duplicate]
... the most efficient method of accomplishing a utility function like this.
_.includes([1, 2, 3], 3); // returns true
If you're concerned about the bulk that's being added to your application by including the whole library, know that you can include functionality separately:
var includes = require...
How do I provide custom cast support for my class?
...when the conversion might fail.
public class MyClass
{
private byte[] _bytes;
// change explicit to implicit depending on what you need
public static explicit operator MyClass(byte[] b)
{
MyClass m = new MyClass();
m._bytes = b;
return m;
}
// chang...
How to write a CSS hack for IE 11? [duplicate]
...ht of the evolving thread, I have updated the below:
IE 11 (and above..)
_:-ms-fullscreen, :root .foo { property:value; }
IE 10 and above
_:-ms-lang(x), .foo { property:value; }
or
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
.foo{property:value;}
}
IE 10 only...
SQL- Ignore case while searching for a string
...
Use something like this -
SELECT DISTINCT COL_NAME FROM myTable WHERE UPPER(COL_NAME) LIKE UPPER('%PriceOrder%')
or
SELECT DISTINCT COL_NAME FROM myTable WHERE LOWER(COL_NAME) LIKE LOWER('%PriceOrder%')
...