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Test if string is a number in Ruby on Rails
... (±5.5%) i/s - 5788976 in 5.035311s
require 'benchmark/ips'
int = '220000'
bad_int = '22.to.2'
Benchmark.ips do |x|
x.report('cast') do
Integer(int) rescue false
end
x.report('cast fail') do
Integer(bad_int) rescue false
end
x.report('to_s') do
int.to_i.to_s == int
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BroadcastReceiver with multiple filters or multiple BroadcastReceivers?
...strings.
– waqaslam
May 9 '13 at 10:22
3
I don't understand all the upvotes for this answer. For ...
How to loop over files in directory and change path and add suffix to filename
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22
If no files are found/match the wildcard I'm finding the for loops execute block is still entered once with filename = "/Data/*.txt". How ...
What is the Python 3 equivalent of “python -m SimpleHTTPServer”
...ewgill
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53
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Finding duplicates in O(n) time and O(1) space
.../3492302/….
– j_random_hacker
Apr 22 '11 at 0:38
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show 17 more comments
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Is there an “exists” function for jQuery?
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edited Jun 22 at 7:57
MartinNajemi
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answered Feb 25 '09 ...
Re-ordering columns in pandas dataframe based on column name [duplicate]
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edited Dec 18 '18 at 22:57
gcamargo
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answere...
Set attribute without value
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22
The accepted answer doesn't create a name-only attribute anymore (as of September 2017).
You ...
Rails filtering array of objects by attribute value
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answered Apr 9 '12 at 10:22
Soundar RathinasamySoundar Rathinasamy
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Underscore: sortBy() based on multiple attributes
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answered Aug 15 '13 at 22:17
Rory MacLeodRory MacLeod
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