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Real world use of JMS/message queues? [closed]
...MS (ActiveMQ is a JMS broker implementation) can be used as a mechanism to allow asynchronous request processing. You may wish to do this because the request take a long time to complete or because several parties may be interested in the actual request. Another reason for using it is to allow mul...
Heroku 'Permission denied (publickey) fatal: Could not read from remote repository' woes
...nd it still didn't work. I ended up having to add an environment variable called HOME set to the directory my .ssh folder was in
– Justin
Dec 31 '13 at 21:31
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How to get users to read error messages?
... how hard you try, do not use colours to identify the message...psychologically, it's akin to waving a red-flag to the bull!
Use neutral sounding words to convey minimal reaction and how to proceed!
It may be better to show a dialog box listing the neutral error message and to include a checkbox ind...
Why are primes important in cryptography?
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Most basic and general explanation: cryptography is all about number theory, and all integer numbers (except 0 and 1) are made up of primes, so you deal with primes a lot in number theory.
More specifically, some important cryptographic algorithms such as RSA critically depen...
C# LINQ find duplicates in List
...erable.GroupBy(x => x.Key).Any(g => g.Count() > 1);
Find out if all values in an enumerable are unique :
var allUnique = enumerable.GroupBy(x => x.Key).All(g => g.Count() == 1);
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How to tell which version of a gem a rails app is using
...gating a rails app - the prod server has two version of a specific gem installed, how can I tell which version the prod app is using?
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App Inventor 2 字典(Dictionary)操作教程 - 键值对数据结构 · App Inventor 2 中文网
...path
list by walking key path（沿路径收集值）
walk all at level（遍历当前层）
判断数据类型：is a dictionary?
字典在JSON解析中的应用
解析JSON字符串
解析嵌套JSON
解析JSON数组中的对象
实战案...
What is the meaning of symbol $ in jQuery?
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You know, this REALLY should be the right answer for this question... I can't believe all those joke-y answers got all the up-votes.
– reedvoid
Aug 15 '13 at 12:59
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What are the differences between JSON and JavaScript object? [duplicate]
...al notation, but there are differences between them.
For example, in JSON all keys must be quoted, while in object literals this is not necessary:
// JSON:
{ "foo": "bar" }
// Object literal:
var o = { foo: "bar" };
The quotes are mandatory on JSON because in JavaScript (more exactly in ECMAScr...
CSS two divs next to each other
...d="narrow">Narrow (200px)</div>
</div>
This is basically just scraping the surface of flexbox. Flexbox can do pretty amazing things.
For older browser support, you can use CSS float and a width properties to solve it.
#narrow {
float: right;
width: 200px;
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