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How to fix the uninitialized constant Rake::DSL problem on Heroku?
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5 Answers
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ValueError: math domain error
...gt;>> log(-1)
Traceback (most recent call last):
File "<pyshell#59>", line 1, in <module>
log(-1)
ValueError: math domain error
Without knowing what your newtonRaphson2 function does, I'm not sure I can guess where the invalid x[2] value is coming from, but hopefully this w...
Compare version numbers without using split function
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Difference Between Invoke and DynamicInvoke
...813ms
Code:
Func<int,int> twice = x => x * 2;
const int LOOP = 5000000; // 5M
var watch = Stopwatch.StartNew();
for (int i = 0; i < LOOP; i++)
{
twice.Invoke(3);
}
watch.Stop();
Console.WriteLine("Invoke: {0}ms", watch.ElapsedMilliseconds);
watch = Stopwatch.StartNew();
for (int i...
rails 3 validation on uniqueness on multiple attributes
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edited Aug 15 '14 at 14:15
Jason Swett
36.7k5757 gold badges183183 silver badges314314 bronze badges
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Generate array of all letters and digits
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145
[*('a'..'z'), *('0'..'9')] # doesn't work in Ruby 1.8
or
('a'..'z').to_a + ('0'..'9').to_a # ...
How do I find out which settings.xml file maven is using
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Use the Maven debug option, ie mvn -X :
Apache Maven 3.0.3 (r1075438; 2011-02-28 18:31:09+0100)
Maven home: /usr/java/apache-maven-3.0.3
Java version: 1.6.0_12, vendor: Sun Microsystems Inc.
Java home: /usr/java/jdk1.6.0_12/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "lin...
Bootstrap 3 - Why is row class is wider than its container?
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152
In all grid systems, there are gutters between each column. Bootstrap's system sets a 15px padd...
Hidden Features of JavaScript? [closed]
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community wiki
5 revs, 4 users 68%Mark Cidade
117
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