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open read and close a file in 1 line of code
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You don't really have to close it - Python will do it automatically either during garbage collection or at program exit. But as @delnan noted, it's better practice to explicitly close it for various reasons.
So, what you can do to keep it short, simple an...
What do the terms “CPU bound” and “I/O bound” mean?
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It's pretty intuitive:
A program is CPU bound if it would go faster if the CPU were faster, i.e. it spends the majority of its time simply using the CPU (doing calculations). A program that computes new digits of π will typ...
Which is more preferable to use: lambda functions or nested functions ('def')?
...generally more readable than those functions and can cover all use cases, without the need of lambdas.
For the cases you really need a small function object, you should use the operator module functions, like operator.add instead of lambda x, y: x + y
If you still need some lambda not covered, yo...
How to create the perfect OOP application [closed]
...calculations in double. Do financial calculations in decimal; that is what it is for. Use double to solve physics problems, not financial problems.
The major design flaw in your program is that policy is in the wrong place. Who is in charge of computing the taxes? You've put the product in charg...
Download File Using jQuery
...follow
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edited Aug 20 '09 at 2:33
answered Aug 18 '09 at 19:51
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Difference between CouchDB and Couchbase
...en CouchDB and Couchbase Server that need to be pointed out.
I will not write about the advantages of switching from CouchDB to the Couchbase Server because those are described pretty much everywhere (see The Future of CouchDB by Damien Katz or
Couchbase vs. Apache CouchDB
by Couchbase). Instead, ...
event.preventDefault() vs. return false
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return false from within a jQuery event handler is effectively the same as calling both e.preventDefault and e.stopPropagation on the passed jQuery.Event object.
e.preventDefault() will prevent the default event from occuring, e.stopPropagati...
Using Python 3 in virtualenv
Using virtualenv , I run my projects with the default version of Python (2.7). On one project, I need to use Python 3.4.
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Awaiting multiple Tasks with different results
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After you use WhenAll, you can pull the results out individually with await:
var catTask = FeedCat();
var houseTask = SellHouse();
var carTask = BuyCar();
await Task.WhenAll(catTask, houseTask, carTask);
var cat = await catTask;
var house = await houseTask;
var car = await carTask;
You...
How to set Sqlite3 to be case insensitive when string comparing?
I want to select records from sqlite3 database by string matching. But if I use '=' in the where clause, I found that sqlite3 is case sensitive. Can anyone tell me how to use string comparing case-insensitive?
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