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How to check if a table exists in a given schema
...verything else that has
columns or is otherwise similar to a table. This includes indexes (but
see also pg_index), sequences, views, materialized views, composite
types, and TOAST tables;
For this particular question you can also use the system view pg_tables. A bit simpler and more portable...
How to vertically center a container in Bootstrap?
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Update 2020
Bootstrap 4 includes flexbox, so the method of vertical centering is much easier and doesn't require extra CSS.
Just use the d-flex and align-items-center utility classes..
<div class="jumbotron d-flex align-items-center">
<di...
Java - How to create new Entry (key, value)
...ub.com/google/guava Guava is a set of core Java libraries from Google that includes new collection types (such as multimap and multiset), immutable collections, a graph library, and utilities for concurrency, I/O, hashing, caching, primitives, strings, and more! It is widely used on most Java projec...
How do I create a new GitHub repo from a branch in an existing repo?
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Convert a python 'type' object to a string
... Doing print(type(someObject)) will print the full name (ie. including the package)
– MageWind
Jun 30 '14 at 20:20
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How to make exe files from a node.js app?
...ode webkit cheatsheet here: gist.github.com/LeCoupa/80eca2716a2b13c37cce Includes other intensely useful stuff like how to compile the JS (or at least crunch down to byte code depending on how old-fashioned you want to be about the word "compile").
– Erik Reppen
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How to prevent a background process from being stopped after closing SSH client in Linux
... <<EOF
[...]
EOF
This works on every single shell I've ever tried, including busybox/etc (initramfs). I've never seen it done before, I independently discovered it while prodding, who knew source could accept args? But it often serves as a much more manageable form of eval, if there is such...
What is Hindley-Milner?
... every statically typed functional language. Such languages in common use include
The ML family (Standard ML and Objective Caml)
Haskell
Clean
All these languages have extended Hindley-Milner; Haskell, Clean, and Objective Caml do so in ambitious and unusual ways. (Extensions are required to d...
super() fails with error: TypeError “argument 1 must be type, not classobj” when parent does not inh
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