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Adding elements to object
... brackets [] are used to access the property. Test it here on jsfiddle and read about it here at Mozilla and here's a great article at Digital Ocean that I wish I came across long ago.
– Hastig Zusammenstellen
Aug 27 '18 at 7:33
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C state-machine design [closed]
...am building one small-ish state-machine at the heart of one of my worker thread.
27 Answers
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How to UPSERT (MERGE, INSERT … ON DUPLICATE UPDATE) in PostgreSQL?
...e.
If you're on 9.5 and don't need to be backward-compatible you can stop reading now.
9.4 and older:
PostgreSQL doesn't have any built-in UPSERT (or MERGE) facility, and doing it efficiently in the face of concurrent use is very difficult.
This article discusses the problem in useful detail.
In g...
Getting new Twitter API consumer and secret keys
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Log into the Twitter Developers section.
If you don't already have an account, you can login with your normal Twitter credentials
Go to "Create an app"
Fill in the details of the application you'll be using to connect with the API
Your application name must be unique. If someon...
String comparison in Python: is vs. == [duplicate]
...ed. The statement
if x is y then x==y is also True
should never be read to mean
if x==y then x is y
It is a logical error on the part of the reader to assume that the converse of a logic statement is true. See http://en.wikipedia.org/wiki/Converse_(logic)
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Is there a way to perform “if” in python's lambda
... a comment recommending it, which makes at least seven people--didn't even read the original question.
– Glenn Maynard
Oct 19 '09 at 22:48
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How can I check if a scrollbar is visible?
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This answer worked for me after checking if the DOM is ready using JQuery .ready()
– Simple Sandman
Nov 29 '16 at 20:23
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About Android image and asset sizes
...script and paste the following code:
createAndroidImages.sh
#!/bin/bash
read -p "Please enter the subfolder of the original images? " folder
read -p "How many DP (width) should the image have? " dp
for i in $(find $folder/. -type f -name "*[A-Z]*"); do mv "$i" "$(echo $i | tr A-Z a-z)"; done
mk...
Java heap terminology: young, old and permanent generations?
... Java VMs that use class data sharing,
this generation is divided into
read-only and read-write areas.
Code Cache (non-heap): The HotSpot Java VM also includes a code cache,
containing memory that is used for
compilation and storage of native
code.
Java uses generational garbage col...
Remove a git commit which has not been pushed
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Reader, before you git reset your code. Do your future self a favor: The difference between reset, reset --soft, and reset --hard (What happens to your earlier git add aka "your work" :) Picture: link
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