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What is database pooling?

I just wanted to know the concept of database connection pooling and how it is achieved. 6 Answers ...
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How can I mock requests and the response?

... 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...
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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

... 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...
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Android Dialog: Removing title bar

... use, dialog.requestWindowFeature(Window.FEATURE_NO_TITLE); //before dialog.setContentView(R.layout.logindialog); share | improve this answer | fo...
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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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Instance variable: self vs @

... Writing @age directly accesses the instance variable @age. Writing self.age tells the object to send itself the message age, which will usually return the instance variable @age — but could do any number of other things depen...
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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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Passing arguments forward to another javascript function

I've tried the following with no success: 5 Answers 5 ...