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How do I find if a string starts with another string in Ruby?
...nted to figure out which one was fastest. Using Ruby 1.9.3p362:
irb(main):001:0> require 'benchmark'
=> true
irb(main):002:0> Benchmark.realtime { 1.upto(10000000) { "foobar"[/\Afoo/] }}
=> 12.477248
irb(main):003:0> Benchmark.realtime { 1.upto(10000000) { "foobar" =~ /\Afoo/ }}
=>...
How to get equal width of input and select fields
...one from the top that worked for me, thanks :)
– sjjk001
Aug 27 at 8:17
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Binary Data in JSON String. Something better than Base64
...uote U+0022, the backslash U+005C, and "the control characters U+0000 to U+001F".
– hobbs
Jun 25 '15 at 7:53
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How to change Git log date formats
... Hour in 12-hour format (01 – 12)
%j Day of year as decimal number (001 – 366)
%m Month as decimal number (01 – 12)
%M Minute as decimal number (00 – 59)
%p Current locale's A.M./P.M. indicator for 12-hour clock
%S Second as decimal number (00 – 59)
%U Week of...
Float vs Decimal in ActiveRecord
...loat exactly.
That's why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.10000000000000000555111512312578270211815834045" # not "0.1"!
whereas if you just do
irb:002:0> (1.0/10).to_s
=> "0.1" # the interprer rounds the number for you
So if you are d...
Beyond Stack Sampling: C++ Profilers
...A few hints to get gprof2dot to generate nice output.
I use a --skew of 0.001 on my graphs so I can easily see the hot code paths. Otherwise the int main() dominates the graph.
If you're doing anything crazy with C++ templates you'll probably want to add --strip. This is especially true with Boos...
REST URI convention - Singular or plural name of resource while creating it
...16e2-e1and one particular item in that collection example.org/20d68348-ccc-001c4200de. The client should not construct URLs (that obviously doesn't scale, it isn't RESTful and that's what link relation types are for).
– Erik
Apr 13 '15 at 13:53
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Difference between '..' (double-dot) and '…' (triple-dot) in range generation?
...alue.
-- http://ruby-doc.org/core-2.1.3/Range.html
In other words:
2.1.3 :001 > ('a'...'d').to_a
=> ["a", "b", "c"]
2.1.3 :002 > ('a'..'d').to_a
=> ["a", "b", "c", "d"]
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Retain precision with double in Java
... will, be fewer significant digits e.g. 1 x 2^-1030 is stored as (0.)00000001 x 2^-1022 so seven significant digits have been sacrificed to scale.
– Sarah Phillips
Apr 12 '14 at 20:14
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How to translate between Windows and IANA time zones?
...ica/Toronto. TimeZoneConverter will deliver the one that CLDR marks with "001", known as the "golden zone", unless you specifically provide a country code and there's a match for a different zone in that country.
Note: This answer has evolved over the years, so comments below may or may not apply t...