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answered Dec 2 '10 at 0:40
Fake Code Monkey RashidFake Code Monkey Rashid
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Ruby on Rails: How do you add add zeros in front of a number if it's under 10?
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Did you mean sprintf '%02d', n?
irb(main):003:0> sprintf '%02d', 1
=> "01"
irb(main):004:0> sprintf '%02d', 10
=> "10"
You might want to reference the format table for sprintf in the future, but for this particular example '%02d' mea...
Tomcat: How to find out running tomcat version
... : Apache Tomcat/5.5.25
Servlet Specification Version : 2.4
JSP version: 2.0
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rails 3 validation on uniqueness on multiple attributes
I use Rails 3.0.0.beta4
3 Answers
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Create a completed Task
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answered Nov 22 '10 at 13:51
QrystaLQrystaL
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Convert a row of a data frame to vector
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edited Oct 30 '19 at 16:15
answered Jan 23 '13 at 16:42
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How to convert a string to an integer in JavaScript?
...simplest way would be to use the native Number function:
var x = Number("1000")
If that doesn't work for you, then there are the parseInt, unary plus, parseFloat with floor, and Math.round methods.
parseInt:
var x = parseInt("1000", 10); // you want to use radix 10
// so you get a decimal n...
Should I use a data.frame or a matrix?
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edited Aug 30 '17 at 0:12
answered Mar 1 '11 at 19:00
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Javascript equivalent of Python's zip function
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2016 update:
Here's a snazzier Ecmascript 6 version:
zip= rows=>rows[0].map((_,c)=>rows.map(row=>row[c]))
Illustration equiv. to Python{zip(*args)}:
> zip([['row0col0', 'row0col1', 'row0col2'],
['row1co...
is_file or file_exists in PHP
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answered Apr 27 '09 at 10:00
hbwhbw
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