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What's a monitor in Java?
...nism to control concurrent access to an object.
This allows you to do:
Thread 1:
public void a()
{
synchronized(someObject) {
// do something (1)
}
}
Thread 2:
public void b()
{
synchronized(someObject) {
// do something else (2)
}
}
This prevents Threads 1 an...
How to delete and replace last line in the terminal using bash?
...
echo a carriage return with \r
seq 1 1000000 | while read i; do echo -en "\r$i"; done
from man echo:
-n do not output the trailing newline
-e enable interpretation of backslash escapes
\r carriage return
...
How to send a JSON object over Request with Android?
...TP Client. Here's a code sample on how to do it. You should create a new thread for network activities so as not to lock up the UI thread.
protected void sendJson(final String email, final String pwd) {
Thread t = new Thread() {
public void run() {
Looper.pr...
Origin is not allowed by Access-Control-Allow-Origin
I read about cross domain ajax requests, and understand the underlying security issue. In my case, 2 servers are running locally, and like to enable cross domain requests during testing.
...
Setting environment variables on OS X
...ou want it to pick up the changed environment.
This includes any shells already running under Terminal.app, although if you're there you can set the environment more directly, e.g. with export PATH=/opt/local/bin:/opt/local/sbin:$PATH for bash or zsh.
How to keeping changes after a reboot
To keep...
When to Redis? When to MongoDB? [closed]
...eed to build a prototype without worrying too much about your DB.
Further reading:
Interesting aspects to consider when using Redis as a primary data store
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edited Ma...
How do I flush the PRINT buffer in TSQL?
... the definitive source on SQL Server Error handling and definitely worth a read:
http://www.sommarskog.se/error-handling-I.html
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ASP.NET MVC Relative Paths
...ent, therefore, reducing one more thing the server has to do? I thought i read somewhere the more you can avoid having the server process, the better - especially with static content like *.js paths? I realize this uses minimal resources, but if you had a couple hundred/thousand Url.Content() in y...
How can I remove a character from a string using Javascript?
...:
mystring.replace(/\/r/, '/')
Now for the excessive explanation:
When reading/writing a regEx pattern think in terms of: <a character or set of charcters> followed by <a character or set of charcters> followed by <...
In regEx <a character or set of charcters> could be one...
What are the best practices for using a GUID as a primary key, specifically regarding performance?
...lication that uses GUID as the Primary Key in almost all tables and I have read that there are issues about performance when using GUID as Primary Key. Honestly, I haven't seen any problem, but I'm about to start a new application and I still want to use the GUIDs as the Primary Keys, but I was thin...