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python multithreading wait till all threads finished
...oin method of Thread object in the end of the script.
t1 = Thread(target=call_script, args=(scriptA + argumentsA))
t2 = Thread(target=call_script, args=(scriptA + argumentsB))
t3 = Thread(target=call_script, args=(scriptA + argumentsC))
t1.start()
t2.start()
t3.start()
t1.join()
t2.join()
t3.join...
Variable is accessed within inner class. Needs to be declared final
...anges made in the inner class did not persist in the enclosing scope. Basically, what happens in the inner class stays in the inner class.
I wrote a more in-depth explanation here. It also explains why instance and global variables do not need to be declared final.
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In git how is fetch different than pull and how is merge different than rebase?
...aving your local* branch unchanged.
pull will perform a fetch and additionally merge the changes into your local branch.
What's the difference? pull updates you local branch with changes from the pulled branch. A fetch does not advance your local branch.
merge vs rebase
Given the following histo...
Can you have a within a ?
...sert a Flash object into my page. The embedding eats my span . So, I lose all my CSS for it. I was thinking of moving all of the CSS to the parent so I don't lose my CSS styles when the Flash appears.
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How do I delete a fixed number of rows with sorting in PostgreSQL?
...erm row identifier.
There's also oid but that only exists if you specifically ask for it when you create the table.
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How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
...of PostgreSQL
In old versions of PostgreSQL (prior to 8.x?) you had to do all the dirty work. The following sequence of commands should do the trick:
ALTER TABLE test1 ADD COLUMN id INTEGER;
CREATE SEQUENCE test_id_seq OWNED BY test1.id;
ALTER TABLE test ALTER COLUMN id SET DEFAULT nextval('...
What is the effect of encoding an image in base64?
...
Here's a really helpful overview of when to base64 encode and when not to by David Calhoun.
Basic answer = gzipped base64 encoded files will be roughly comparable in file size to standard binary (jpg/png). Gzip'd binary files will ha...
MySql: Tinyint (2) vs tinyint(1) - what is the difference?
...several mysql clients (navicat, sequel pro).
It does not mean anything AT ALL! I ran a test, all above clients or even the command-line client seems to ignore this.
But, display width is most important if you are using ZEROFILL option, for example your table has following 2 columns:
A tinyint(2) ...
Project structure for Google App Engine
.... However, as it has grown, and features have been added, it has gotten really difficult to keep things organized - mainly due to the fact that this is my first python project, and I didn't know anything about it until I started working.
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“You are on a branch yet to be born” when adding git submodule
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I've verified all of these things. When I check out the desired repo to another directory, it has many files, and a master branch. The repo I am trying to add this one to as a submodule is on the master branch, has no obvious problems (sta...