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Enum ToString with user friendly strings
...tion/localisation done, and it would arguably be better to use a fixed key based on the enum key than a decorator attribute on the same.
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How do I use a PriorityQueue?
...n the Priority Queue (having capacity 5) we can provide inline comparator (based on length of String) :
Using lambda expression
PriorityQueue<String> pq=
new PriorityQueue<String>(5,(a,b) -> a.length() - b.length());
Using Method reference
PriorityQueue<St...
Difference between a class and a module
...sessions manage authentication, lots of other classes will act differently based on the auth state), so authentication systems act as shared APIs.
You might also use a module when you have shared methods across multiple apps (again, the library model is good here).
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MySQL InnoDB not releasing disk space after deleting data rows from table
...ver to use innodb_file_per_table, but this will require a backup, drop database and restore. The positive side is that the .ibd file for the table is reduced after an optimize table.
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How to simulate a mouse click using JavaScript?
...you want, whether Shift/Alt/Ctrl are held, etc. The options it accepts are based on the MouseEvents API.
I've tested in Firefox, Safari and Chrome. Internet Explorer might need special treatment, I'm not sure.
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Programmatically access currency exchange rates [closed]
...ill be billed.
If you want to quote an "accurate" price to your customers based on an exchange rate, you need to factor in the above and provide a buffer so that you don't end up charging more than what you quoted.
FWIW, I've been adding 4% to what the F/X conversion would otherwise indicate.
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Copy folder recursively, excluding some folders
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For RHEL derived distros: yum install rsync, or on Debian-based releases: apt-get install rsync . Unless you're building your server from absolute base on your own hardware, this is a non-issue. rsync is installed by default on my Amazon EC2 boxes, as well and my boxes from ZeroLa...
How to get awaitable Thread.Sleep?
I'm writing a network-bound application based on await/sleep paradigm.
1 Answer
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MySQL vs PostgreSQL for Web Applications [closed]
...n change rapidly from version to version, so before you go choosing a DBMS based on the advice below, do some research to see if it's still accurate.
Check for newer answers below.
Better?
MySQL is much more commonly provided by web hosts.
PostgreSQL is a much more mature product.
There's this...
Python function attributes - uses and abuses [closed]
...ciated data together:
#!/usr/bin/env python
SW_DELTA = 0
SW_MARK = 1
SW_BASE = 2
def stopwatch():
import time
def _sw( action = SW_DELTA ):
if action == SW_DELTA:
return time.time() - _sw._time
elif action == SW_MARK:
_sw._time = time.time()
retur...