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What is “callback hell” and how and why does RX solve it?
Can someone give a clear definition together with a simple example that explains what is a "callback hell" for someone who does not know JavaScript and node.js ?
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How can I configure the font size for the tree item in the package explorer in Eclipse?
How can I configure the font size for the tree item in the package explorer/outline in Eclipse?
23 Answers
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Can promises have multiple arguments to onFulfilled?
... whether it allows onFulfilled to be called with multiple arguments. For example:
9 Answers
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How can I shuffle an array? [duplicate]
... items An array containing the items.
*/
function shuffle(a) {
var j, x, i;
for (i = a.length - 1; i > 0; i--) {
j = Math.floor(Math.random() * (i + 1));
x = a[i];
a[i] = a[j];
a[j] = x;
}
return a;
}
ES2015 (ES6) version
/**
* Shuffles array i...
编译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的 - C/C++ - 清...
...re-Interprpreted-by-the-Microsoft-Compiler本文不是一篇介绍如何在x86架构上详细地实现异常处理(exception handling)的手册，只是一篇入门的讨论性文章。本文只是讨论一些处理步骤在理论上应该如何实现，其具体的实现步骤可能跟文章所讨...
Does Swift have access modifiers?
... Objective-C instance data can be public , protected or private . For example:
17 Answers
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How do I debug an MPI program?
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The steps in #6 of the FAQ page worked excellently for me and helped me figure out my problem. Thanks so much for this.
– Jon Deaton
Nov 7 '17 at 5:24
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Postgres: INSERT if does not exist already
...ostgreSQL 9.5 you can do an "old fashioned" UPSERT (with CTE) but you may experience problems with race conditions and it will not be performant as 9.5 style. There is a good detail about upsert on this blog (in the updated area at the bottom) including some links if you want to read more about the ...
REST API - why use PUT DELETE POST GET?
...s of HTTP requests: like PUT DELETE POST GET .
We would create for example index.php and write API this way:
9 Ans...
Why `null >= 0 && null
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Hi CMS, as per your explanation null primitive is 0,so 0>=0 returns true and == is returning false.but as per the ecma algorithm If Type(x) is Object and Type(y) is either String or Number, return the result of the comparison ToPrimitive(x) ==...