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Add a column to a table, if it does not already exist
I want to write a query for MS SQL Server that adds a column into a table. But I don't want any error display, when I run/execute the following query.
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How to force JS to do math instead of putting two strings together
I need javascript to add 5 to an integer variable, but instead it treats the variable as a string, so it write out the variable, then add 5 onto the end of the "string". How can I force it to do math instead?
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Resuming git-svn clone
I started cloning an SVN repository using the git-svn's clone operation. After about 6 hours of importing (it's a big repo), my computer went and slept on me. Is there a way to resume the operation without redoing all of the initial work?
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Ajax request returns 200 OK, but an error event is fired instead of success
I have implemented an Ajax request on my website, and I am calling the endpoint from a webpage. It always returns 200 OK , but jQuery executes the error event.
I tried a lot of things, but I could not figure out the problem. I am adding my code below:
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How to run a method every X seconds
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This really depends on how long apart you need to run the function.
If it is => 10 minutes → I would go with Alarm Manager.
// Some time when you want to run
Date when = new Date(System.currentTimeMillis());
try{
Intent someIntent = new Intent(someContext,MyReceiver.class); // inte...
How do I *really* justify a horizontal menu in HTML+CSS?
...tter browser support, some of us can finally start using them. Just add additional vendor prefixes for more browser coverage.
In this instance, you would just set the parent element's display to flex and then change the justify-content property to either space-between or space-around in order to ad...
How can I mock requests and the response?
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This is how you can do it (you can run this file as-is):
import requests
import unittest
from unittest import mock
# This is the class we want to test
class MyGreatClass:
def fetch_json(self, url):
response = requests.get(url)
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Why are global variables evil? [closed]
...ce in python (and in programming in general). Can somebody explain? Links with more info would also be appreciated.
4 Answe...
Can we have multiple in same ?
...;
</tbody>
</table>
You can view an example here. It'll only work in newer browsers, but that's what I'm supporting in my current application, you can use the grouping for JavaScript etc. The main thing is it's a convenient way to visually group the rows to make the data muc...
Apply a function to every row of a matrix or a data frame
...pose I have a n by 2 matrix and a function that takes a 2-vector as one of its arguments. I would like to apply the function to each row of the matrix and get a n-vector. How to do this in R?
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