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IllegalArgumentException or NullPointerException for a null parameter? [closed]
...ava 2nd Edition, Item 60: "Arguably, all erroneous method invocations boil down to an illegal argument or illegal state, but other exceptions are standardly used for certain kinds of illegal arguments and states. If a caller passes null in some parameter for which null values are prohibited, convent...
Integrating the ZXing library directly into my Android application
...is can be used for URLs too, but string
// must include "http://" or "https://".
public static final String TEXT = "TEXT_TYPE";
// An email type. Use Intent.putExtra(DATA, string) where string is the email address.
public static final String EMAIL = "EMAIL_TYPE";
...
How to round to 2 decimals with Python?
... rounds up, and in my case I needed the value of my variable to be rounded down and not just displayed as such.
round(2.357, 2) # -> 2.36
I found the answer here: How do I round a floating point number up to a certain decimal place?
import math
v = 2.357
print(math.ceil(v*100)/100) # -> ...
Class vs. static method in JavaScript
...bj.func(); // <- Alert's "STATIC!!!"
Simple Javascript Class Project: https://github.com/reduardo7/sjsClass
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How to make connection to Postgres via Node.js
...Postgres database.
The interface in node.js that I used can be found here https://github.com/brianc/node-postgres
var pg = require('pg');
var conString = "postgres://YourUserName:YourPassword@localhost:5432/YourDatabase";
var client = new pg.Client(conString);
client.connect();
//queries are que...
When to use Task.Delay, when to use Thread.Sleep?
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How would Git handle a SHA-1 collision on a blob?
...mps such that the resulting git commit has your desired prefix.
Example: https://github.com/bradfitz/deadbeef
Daniel Dinnyes points out in the comments to 7.1 Git Tools - Revision Selection, which includes:
A higher probability exists that every member of your programming team will be attac...
What are the differences between a clustered and a non-clustered index?
... performance when select data with fields that use the index but will slow down update and insert operations.
Because of the slower insert and update clustered indexes should be set on a field that is normally incremental ie Id or Timestamp.
SQL Server will normally only use an index if its select...
Optimise PostgreSQL for fast testing
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ab load testing
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