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Creating a new dictionary in Python
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@ Matt Apparently CPython 2.7 dict() is slower (6 times slower?), See: doughellmann.com/2012/11/… In any case I am starting to prefer the constructor syntax anyways since I find it easier to type and move code between dicts and function calls.
– David...
Test if lists share any items in python
...st create sets out of the lists, which can take a non-negligible amount of time, and 2) it supposes that hashing collisions are sparse among your data.
The second way to do it is using a generator expression performing iteration on the lists, such as:
any(i in a for i in b)
This allows to search...
Windows: XAMPP vs WampServer vs EasyPHP vs alternative [closed]
... install and configure your environment is great -- and useful.
The first time, you'll need maybe half a day or a day to configure those. But, at least, you'll know how to do so.
And the next times, things will be far more easy, and you'll need less time.
Else, you might want to take a look at Ze...
Use of 'use utf8;' gives me 'Wide character in print'
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6 Answers
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HTTP Content-Type Header and JSON
I have always been trying to avoid using most of the HTTP protocol's properties for the sake of fear of the unknown.
4 Answ...
What's the point of g++ -Wreorder?
The g++ -Wall option includes -Wreorder. What this option does is described below. It is not obvious to me why somebody would care (especially enough to turn this on by default in -Wall).
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How to get the part of a file after the first line that matches a regular expression?
I have a file with about 1000 lines. I want the part of my file after the line which matches my grep statement.
12 Answers
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When do you use the “this” keyword? [closed]
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@Anand it will not affect performance at run time whatsoever. Assuming there is no ambiguity, the compiler's output is the same regardless of whether you write, for example this.someField = someValue or someField = someValue. It could affect the compiler's performance...
Simplest way to do a recursive self-join?
What is the simplest way of doing a recursive self-join in SQL Server? I have a table like this:
5 Answers
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How do I select an entire row which has the largest ID in the table?
...ing it, this particular query may be OK. Although running a query a couple times with profiling doesn't necessarily say much about relative performance.
– Michael Mior
Feb 8 '14 at 23:38
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