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How do you check if a variable is an array in JavaScript? [duplicate]
...ork as variable instanceof Number always returns false. Update: instanceof now goes 2/3 the speed!
So yet another update
Object.prototype.toString.call(variable) === '[object Array]';
This guy is the slowest for trying to check for an Array. However, this is a one stop shop for any type you're l...
Convert blob to base64
...res => {
// do what you wanna do
console.log(res); // res is base64 now
});
I write this helper function for my problem on React Native project, I wanted to download an image and then store it as a cached image:
fetch(imageAddressAsStringValue)
.then(res => res.blob())
.then(blobT...
Download data url file
...st calling a.click() directly would not work but it worket with the event. Now they both work.
– Zibri
Mar 17 '19 at 9:48
1
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importing pyspark in python shell
... The other solutions didn't work for me. I am using findspark for now in my program. Seems like a decent workaround to the problem.
– Analytical Monk
Oct 15 '16 at 8:11
...
Shell - How to find directory of some command?
I know that when you are on shell, the only commands that can be used are the ones that can be found on some directory set on PATH.
Even I don't know how to see what dirs are on my PATH variable (and this is another good question that could be answered), what I'd like to know is:
...
How to upload a file in Django? [closed]
... 2 hours to dig up all the pieces to understand how this works. With that knowledge I implemented a project that makes possible to upload files and show them as list. To download source for the project, visit https://github.com/axelpale/minimal-django-file-upload-example or clone it:
> git clon...
Set Page title using UI-Router
...nother way of doing this by combining most of the answers here already. I know this is already answered but I wanted to show the way I dynamically change page titles with ui-router.
If you take a look at ui-router sample app, they use the angular .run block to add the $state variable to $rootScope....
How do I invert BooleanToVisibilityConverter?
...
Write your own is the best solution for now. Here is an example of a Converter that can do both way Normal and Inverted. If you have any problems with this just ask.
[ValueConversion(typeof(bool), typeof(Visibility))]
public class InvertableBooleanToVisibilityConv...
How to change the name of an iOS app?
...an an iPhone project the other day with a silly development code name, and now I want to change the name of the project since it's nearly finished.
...
What is the meaning of symbol $ in jQuery?
...
Hi, @Andrea i don't know whether i'm asking correct question or not, i'm new to jQuery. Can we replace that $ with any other symbol? and if possible, how?
– Hulk
Jun 16 '14 at 13:23
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