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xpath find if node exists
...probably ask that as a new question at SO, but as a quick guide: html/body and not(html/body/node()) (i.e., just test if it exists and it does not contain any child nodes, or text nodes).
– Abel
Sep 6 '15 at 11:30
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Renaming a virtualenv folder without breaking it
I've created folder and initialized a virtualenv instance in it.
10 Answers
10
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Scroll to a div using jquery
...click( function() { // Your code here } ); in order to bind a click event handler to the object.... Like in my example below. As an aside, you can also just trigger a click on an object by using it without arguments, like object.click().
Third, scrollTo is a plugin in jQuery. I don't know if you ha...
Is it alright to use target=“_blank” in HTML5?
... edited Apr 13 '15 at 1:13
Andrew T.
4,56477 gold badges3838 silver badges5555 bronze badges
answered Nov 16 '10 at 20:56
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Why doesn't ruby support method overloading?
...od overloading can be achieved by declaring two methods with the same name and different signatures. These different signatures can be either,
Arguments with different data types, eg: method(int a, int b) vs method(String a, String b)
Variable number of arguments, eg: method(a) vs method(a, b)
W...
Mocha / Chai expect.to.throw not catching thrown errors
...test keeps failing on the thrown error, but If I wrap the test case in try and catch and assert on the caught error, it works.
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Automatically capture output of last command into a variable using Bash?
I'd like to be able to use the result of the last executed command in a subsequent command. For example,
22 Answers
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jQuery pass more parameters into callback
...ure.
As a more basic example, here is an example function that receives and calls a callback function, as well as an example callback function:
function callbackReceiver(callback) {
callback("Hello World");
}
function callback(value1, value2) {
console.log(value1, value2);
}
This call...
Does Typescript support the ?. operator? (And, what's it called?)
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Update: it is supported as of TypeScript 3.7 and called Optional chaining: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#optional-chaining
I can't find any reference to it whatsoever in the TypeScript language specification.
As far as ...
C# LINQ find duplicates in List
... , how can I retrieve a list that contains entries repeated more than once and their values?
9 Answers
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