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How to remove unused imports from Eclipse
... Window > Preferences > Java > Editor > Save Actions
and pick what ever you want .
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undefined method `source_index' for Gem:Module (NoMethodError)
... app from REE 1.8.7 to 1.9.3-p385. Oddly, Ruby 1.9.3-p327 works just fine. What it came down to was ruby-1.9.3-p385 had installed RubyGems version 2.0.2 for me, and 1.9.3-p327 has RubyGems v1.8.23 installed.
Gem.source_index has been deprecated for a while, but since Rails 2.3 is not getting any up...
Razor comment syntax
What is the syntax for server side comment in razor view?
4 Answers
4
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Performance of foreach, array_map with lambda and array_map with static function
What's the performance difference (if there is any) between these three approaches, both used to transform an array to another array?
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SQL Server query - Selecting COUNT(*) with DISTINCT
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DISTINCT COUNT(*) will return a row for each unique count. What you want is COUNT(DISTINCT <expression>): evaluates expression for each row in a group and returns the number of unique, non-null values.
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Ruby : How to write a gem? [closed]
I'd like to write a package for Ruby and make it available as a gem.
What are the tools, steps and pitfalls ?
Are there any good tutorials, screencasts, etc., which helped you learning how to do it ?
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Detect if an element is visible with jQuery [duplicate]
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if($('#testElement').is(':visible')){
//what you want to do when is visible
}
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Supervisor socket error issue [closed]
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What returns when you hit enter?
– kelorek
May 24 '14 at 19:13
5
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Load data from txt with pandas
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If you don't have an index assigned to the data and you are not sure what the spacing is, you can use to let pandas assign an index and look for multiple spaces.
df = pd.read_csv('filename.txt', delimiter= '\s+', index_col=False)
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Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
...ation in any way: nicer, faster, more "native" to the language.
That was what I answered above. The answer was
0) Use optimization via -O2
1) Use fast (notably: unbox-able) types when possible
2) rem not mod (a frequently forgotten optimization) and
3) worker/wrapper transformation (perha...