大约有 40,000 项符合查询结果（耗时：0.0551秒） [XML]
How to change background color in android app
...:background="@color/white"
Also you need to add a value for white in the strings.xml
<color name="white">#FFFFFF</color>
Edit : 18th Nov 2012
The first two letters of an 8 letter color code provide the alpha value, if you are using the html 6 letter color notation the color is opaq...
How do I avoid capturing self in blocks when implementing an API?
...ied inside the block (we're not doing that) but also they are not automatically retained when the block is retained (unless you are using ARC). If you do this, you must be sure that nothing else is going to try to execute the block after the MyDataProcessor instance is released. (Given the structure...
How to send JSON instead of a query string with $.ajax?
...lain in an easy way how to make jQuery send actual JSON instead of a query string?
4 Answers
...
Define a lambda expression that raises an Exception
...ur goal is to avoid a def, this obviously doesn't cut it. It does, however allow you to conditionally raise exceptions, e.g.:
y = lambda x: 2*x if x < 10 else raise_(Exception('foobar'))
Alternatively you can raise an exception without defining a named function. All you need is a strong stom...
Difference between Java SE/EE/ME?
...program.
Java SDK (Java Software Development Kit):
SDK comprises a JDK and extra software, such as application servers, debuggers, and documentation.
Java SE:
Java platform, Standard Edition (Java SE) lets you develop and deploy Java applications on desktops and servers (same as SDK).
J2SE, J2ME, J2...
Relational table naming convention [closed]
...e theory.
Some of the wonderful things about Standards are:
they are all integrated with each other
they work together
they were written by minds greater than ours, so we do not have to
debate them.
The standard table name refers to each row in the table, which is used in the all verbiage, n...
Why can't I make a vector of references?
...td::reference_wrapper like this:
#include <functional>
#include <string>
#inclu
Can I store the .git folder outside the files I want tracked?
...e
gitdir: /path/to/repo.git
Since git 1.7.5 the init command learned an extra option for this.
You can initialize a new separate repository with
git init --separate-git-dir /path/to/repo.git
This will initialize the git repository in the separate directory and add the .git file in the current...
How do I perform the SQL Join equivalent in MongoDB?
...rect. The new $lookup operator added to the aggregation pipeline is essentially identical to a left outer join:
https://docs.mongodb.org/master/reference/operator/aggregation/lookup/#pipe._S_lookup
From the docs:
{
$lookup:
{
from: <collection to join>,
localField: <...
Find object by id in an array of JavaScript objects
...
@VickyChijwani: Are there any issues when comparing a string to a string?
– Guffa
Dec 11 '12 at 12:17
38
...