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Check synchronously if file/directory exists in Node.js
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You can use fs.existsSync():
const fs = require("fs"); // Or `import fs from "fs";` with ESM
if (fs.existsSync(path)) {
// Do something
}
It was deprecated for several years, but no longer is. From the docs:
Note that fs.exists() is deprecated, but fs.existsSync() is not. (The
callbac...
Working with $scope.$emit and $scope.$on
How can I send my $scope object from one controller to another using .$emit and .$on methods?
12 Answers
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I want to remove double quotes from a String
...(str.length -1). substr expects 2 arguments, where the first is the offset from which the substring starts, the second is its length. Since we don't want the last char, anymore than we want the first, that length is str.length - 2. Easy-peazy.
Tips:
More on lookaround assertions can be found here
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tinyxml XML解析库下载（tinyxml2.h 和 tinyxml2.cpp） - 源码下载 - 清泛...
...anty. In no event will the authors be held liable for any
damages arising from the use of this software.
Permission is granted to anyone to use this software for any
purpose, including commercial applications, and to alter it and
redistribute it freely, subject to the following restrictions:
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How to document Python code with doxygen [closed]
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Sphinx is mainly a tool for formatting docs written independently from the source code, as I understand it.
For generating API docs from Python docstrings, the leading tools are pdoc and pydoctor. Here's pydoctor's generated API docs for Twisted and Bazaar.
Of course, if you just want to ...
Are iframes considered 'bad practice'? [closed]
...d CSS scope. They isolate the inner markup, layout, style, and Javascript* from the outer document, which is useful in many use cases and applications. *Javascript is not isolated if the inner document shares origin with the outer one; on the other hand, documents from different origins can still co...
Calling constructor from other constructor in same class
...st also be taken into consideration when chaining constructors:
To borrow from Gishu's answer, a bit (to keep code somewhat similar):
public Test(bool a, int b, string c)
: this(a, b)
{
this.C = c;
}
private Test(bool a, int b)
{
this.A = a;
this.B = b;
}
If we change the evalut...
How to remove an element slowly with jQuery?
..., function(){ $target.remove(); });
to run the animation, then remove it from DOM
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In Java, is there a way to write a string literal without having to escape quotes?
...ck of different string-literal syntaxes in Java.
Here's a trick I've used from time to time:
String myString = "using `backticks` instead of quotes".replace('`', '"');
I mainly only do something like that for a static field. Since it's static the string-replace code gets called once, upon initia...
Unique combination of all elements from two (or more) vectors
I am trying to create a unique combination of all elements from two vectors of different size in R.
5 Answers
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