大约有 46,000 项符合查询结果（耗时：0.0498秒） [XML]
What happens with constraints when a view is removed
...y the poster in that question did what he did. I've logged this to verify, and when I remove a subview, and check the constraints on the superview, those constraints that pertained to the removed subview are gone.
– rdelmar
Apr 22 '14 at 15:18
...
How do I use the conditional operator (? :) in Ruby?
...
It is the ternary operator, and it works like in C (the parenthesis are not required). It's an expression that works like:
if_this_is_a_true_value ? then_the_result_is_this : else_it_is_this
However, in Ruby, if is also an expression so: if a then b ...
How do you use NSAttributedString?
...ibutedString which was introduced with the iPad SDK 3.2 (or around 3.2) and is available on the iPhone as of iPhone SDK 4.0 beta .
...
Android: how to make keyboard enter button say “Search” and handle its click?
...ure this out. Some apps have a EditText (textbox) which, when you touch it and it brings up the on-screen keyboard, the keyboard has a "Search" button instead of an enter key.
...
SQL standard to escape column names?
Is there a SQL standard to escape a column name? If not what works for MySQL and SQLite? does it also work for SQL Server?
...
Do I encode ampersands in ?
I'm writing code that automatically generates HTML, and I want it to encode things properly.
4 Answers
...
How to use a WSDL file to create a WCF service (not make a call)
I have an old WSDL file and I want to create a server based on this WSDL file.
5 Answers
...
Why does base64 encoding require padding if the input length is not divisible by 3?
...ence is lost. However, if padded sequences are used, there's no ambiguity, and the sequence as a whole can be decoded correctly.
Edit: An Illustration
Suppose we have a program that base64-encodes words, concatenates them and sends them over a network. It encodes "I", "AM" and "TJM", sandwiches th...
Add a duration to a moment (moment.js)
...nnot just use == to test. You could format each moment to the same output and compare those, or you could just use the .isSame() method.
Your code is now:
var timestring1 = "2013-05-09T00:00:00Z";
var timestring2 = "2013-05-09T02:00:00Z";
var startdate = moment(timestring1);
var expected_enddate ...
Change how fast “title” attribute's tooltip appears
...a browser dependent fashion. For example I remember differences between IE and FF when using \r\n inside it.
Mozilla's docs explain the limits and functionality well.
If you want customization you may take a look at third party plugins such as qTip2 which mimic it using divs and stuff and provide...