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In Typescript, How to check if a string is Numeric
...y to convert a string to a number is with Number, not parseFloat.
Number('1234') // 1234
Number('9BX9') // NaN
You can also use the unary plus operator if you like shorthand:
+'1234' // 1234
+'9BX9' // NaN
Be careful when checking against NaN (the operator === and !== don't work as expected wi...
Why does Java switch on contiguous ints appear to run faster with added cases?
...ogram logic. Part of this code involves multiplying double variables by 10 raised to arbitrary non-negative int exponent s. One fast way (edit: but not the fastest possible, see Update 2 below) to get the multiplied value is to switch on the exponent :
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Django: Display Choice Value
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edited May 19 '19 at 1:54
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Java Replacing multiple different substring in a string at once (or in the most efficient way)
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EF Code First: How do I see 'EntityValidationErrors' property from the nuget package console?
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217
I got annoyed by this recently too. I fixed it by putting a wrapper function in the Configurat...
Calculate the median of a billion numbers
... Probably too late if this had been an interview, but never mind:
Machine 1 shall be called the "control machine", and for the sake of argument either it starts with all the data, and sends it in equal parcels to the other 99 machines, or else the data starts evenly distributed between the machines...
Redirect to named url pattern directly from urls.py in django?
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198
If you are on Django 1.4 or 1.5, you can do this:
from django.core.urlresolvers import revers...
Vagrant error : Failed to mount folders in Linux guest
I have some issues with Vagrant shared folders, my base system is Ubuntu 13.10 desktop.
21 Answers
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mongo - couldn't connect to server 127.0.0.1:27017
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In jQuery, how do I get the value of a radio button when they all have the same name?
...your code, jQuery just looks for the first instance of an input with name q12_3, which in this case has a value of 1. You want an input with name q12_3 that is :checked.
$("#submit").click(() => {
const val = $('input[name=q12_3]:checked').val();
alert(val);
});
<script src="https...