大约有 48,000 项符合查询结果（耗时：0.0935秒） [XML]
Methods inside enum in C#
...
281
You can write extension methods for enum types:
enum Stuff
{
Thing1,
Thing2
}
static c...
How to test if list element exists?
...
156
This is actually a bit trickier than you'd think. Since a list can actually (with some effort)...
Concurrent vs serial queues in GCD
...
217
A simple example: you have a block that takes a minute to execute. You add it to a queue from t...
Instance attribute attribute_name defined outside __init__
...
170
The idea behind this message is for the sake of readability. We expect to find all the attribu...
How to hide databases that I am not allowed to access
...
Had the same issue, as its a shared space on AWS with 1000 other DBs.
In pgAdmin III
make sure you are disconnected from the server,
select the Server, right click -> properties, Advanced tab,
in 'DB restriction' type in the name of your database(s) enclosed in single quot...
Regex lookahead for 'not followed by' in grep
...
151
Negative lookahead, which is what you're after, requires a more powerful tool than the standar...
Using the Swift if let with logical AND operator &&
...
144
As of Swift 1.2, this is now possible. The Swift 1.2 and Xcode 6.3 beta release notes state:
...
C# vs Java Enum (for those new to C#)
..., but at first glance, C#'s enums seem to be more simplistic than the Java 1.5+ implementation. Can anyone enumerate the differences between C# and Java enums, and how to overcome the differences? (I don't want to start a language flame war, I just want to know how to do some things in C# that I u...
How to add number of days to today's date? [duplicate]
I need to be able to add 1, 2 , 5 or 10 days to today's date using jQuery.
16 Answers
...