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Float vs Decimal in ActiveRecord
...esent a Float. It's like a scientific notation for binary (something like +1.43*10^2). Because of that, it is impossible to store fractions and decimals in Float exactly.
That's why there is a Decimal format. If you do this:
irb:001:0> "%.47f" % (1.0/10)
=> "0.100000000000000005551115123125...
Ternary operator is twice as slow as an if-else block?
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Why does the month argument range from 0 to 11 in JavaScript's Date constructor?
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answered Mar 31 '10 at 11:40
leonbloyleonbloy
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How do I change the background color of a plot made with ggplot2
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To change the panel's background color, use the following code:
myplot + theme(panel.backgrou...
How do I change the formatting of numbers on an axis with ggplot?
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Another option is to format your axis tick labels with commas is by using the package scales, ...
Android gradle: buildtoolsVersion vs compileSdkVersion
... compiler, etc...) that you want to use. For each API level (starting with 18), there is a matching .0.0 version.
At IO 2014, we release API 20 and build-tools 20.0.0 to go with it.
Between Android releases we will release updates of the compilers, and so we'll release version .0.1, .0.2, etc... B...
Is it possible to set transparency in CSS3 box-shadow?
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What is 'Pattern Matching' in functional languages?
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Understanding pattern matching requires explaining three parts:
Algebraic data types.
What p...
What is RSS and VSZ in Linux memory management
... to 2500K of shared libraries, has 200K of stack/heap allocations of which 100K is actually in memory (rest is swapped or unused), and it has only actually loaded 1000K of the shared libraries and 400K of its own binary then:
RSS: 400K + 1000K + 100K = 1500K
VSZ: 500K + 2500K + 200K = 3200K
Since...