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Format date and time in a Windows batch script
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All this can be done in just 2 lines using ordinary string replacement: stackoverflow.com/a/23558738/1879699
– Andreas
Apr 22 '16 at 9:34
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Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
...an work around it from within psql by executing the DDL statement conditionally:
SELECT 'CREATE DATABASE mydb'
WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = 'mydb')\gexec
The manual:
\gexec
Sends the current query buffer to the server, then treats each column of each row of the query's...
Retargeting solution from .Net 4.0 to 4.5 - how to retarget the NuGet packages?
...ers a feature that makes this a lot simpler: just do update-package -reinstall -ignoreDependencies from the Package Manager Console.
NuGet 2.0 doesn't handle re-targeting your applications very well. In order to change your packages' target frameworks, you must uninstall and reinstall the packages...
What is the purpose of Rank2Types?
I am not really proficient in Haskell, so this might be a very easy question.
6 Answers
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Zero-based month numbering [closed]
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The use of zero to start counting is actually an optimization trick from Assembly programmers. Instead of assigning 1 to the count register, they XOR'ed the register with itself, which was slightly faster in CPU cycles. This meant that counting would start with 0 an...
In-place type conversion of a NumPy array
...Py array of int32 , how do I convert it to float32 in place ? So basically, I would like to do
6 Answers
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How can I list all foreign keys referencing a given table in SQL Server?
...highly referenced table in a SQL Server database. How can I get a list of all the foreign key constraints I will need to remove in order to drop the table?
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Simplest two-way encryption using PHP
What is the simplest way of doing two way encryption in common PHP installs?
6 Answers
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Node.js create folder or use existing
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Good way to do this is to use mkdirp module.
$ npm install mkdirp
Use it to run function that requires the directory. Callback is called after path is created or if path did already exists. Error err is set if mkdirp failed to create directory path.
var mkdirp = require('mkdir...
What are the Dangers of Method Swizzling in Objective-C?
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I think this is a really great question, and it's a shame that rather than tackling the real question, most answers have skirted the issue and simply said not to use swizzling.
Using method sizzling is like using sharp knives in the kitchen. So...