大约有 48,000 项符合查询结果（耗时：0.0516秒） [XML]
Rails select helper - Default selected value, how?
...g to edit your record.
You need to set the default to your existing value and then only set it to the actual default if you don't have a value. Like so:
f.select :field, options_for_select(value_array, f.object.field || default_value)
For anyone not familiar with f.object.field you always use f....
Make EditText ReadOnly
... to make a read-only EditText view. The XML to do this code seems to be android:editable="false" , but I want to do this in code.
...
Good way to use table alias in Update statement?
I'm using SQL Server, and trying to update rows from within the same table. I want to use a table alias for readability.
2 ...
Inline comments for Bash?
I'd like to be able to comment out a single flag in a one-line command. Bash only seems to have from # till end-of-line comments. I'm looking at tricks like:
...
iphone Core Data Unresolved error while saving
...
It means there's a mandatory property has been assigned nil. Either in your *.xcodatamodel check the "optional" box or when you are saving to the managedObjectContext make sure that your properties are filled in.
If you're getting further erro...
How to go to a specific element on page? [duplicate]
...
The standard technique in plugin form would look something like this:
(function($) {
$.fn.goTo = function() {
$('html, body').animate({
scrollTop: $(this).offset().top + 'px'
}, 'fast');
ret...
git ignore vim temporary files
...le .gitignore the line
*~
Vim also creates swap files that have the swp and swo extensions. to remove those use the lines:
*.swp
*.swo
This will ignore all the vim temporary files in a single project
If you want to do it globally, you can create a .gitignore file in your home (you can give it...
How to define multiple CSS attributes in jQuery?
...
Better to just use .addClass() and .removeClass() even if you have 1 or more styles to change. It's more maintainable and readable.
If you really have the urge to do multiple CSS properties, then use the following:
.css({
'font-size' : '10px',
'width...
When using the Java debugger in Intellij what does “Drop Frame” mean?
I was using the Java debugger within Intellij 8 and noticed a button labeled "drop frame", does anybody know what purpose this serves? How/why would this be used/useful?
...
Pass entire form as data in jQuery Ajax function
I have a jQuery ajax function and would like to submit an entire form as post data. We are constantly updating the form so it becomes tedious to constantly update the form inputs that should be sent in the request.
...