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Check if null Boolean is true results in exception
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173
When you have a boolean it can be either true or false. Yet when you have a Boolean it can be ...
Rails find record with zero has_many records associated [duplicate]
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129
Bah, found it here: https://stackoverflow.com/a/5570221/417872
City.includes(:photos).where(p...
Selecting multiple columns in a pandas datafram>me m>
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18 Answers
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How to redirect the output of a PowerShell to a file during its execution
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10 Answers
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What is the scope of variables in JavaScript?
...function f() {
function g() {
console.log(x)
}
let x = 1
g()
}
f() // 1 because x is hoisted even though declared with `let`!
Function param>me m>ter nam>me m>s
Function param>me m>ter nam>me m>s are scoped to the function body. Note that there is a slight complexity to this. Functions dec...
Make a div fill up the remaining width
...this:
<style>
#divMain { width: 500px; }
#left-div { width: 100px; float: left; background-color: #fcc; }
#middle-div { margin-left: 100px; margin-right: 100px; background-color: #cfc; }
#right-div { width: 100px; float: right; background-color: #ccf; }
</style>
<div...
How to Delete using INNER JOIN with SQL Server?
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16 Answers
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Quickly find whether a value is present in a C array?
...ritical ISR that needs to iterate through an array of size 256 (preferably 1024, but 256 is the minimum) and check if a value matches the arrays contents. A bool will be set to true is this is the case.
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How to use java.String.format in Scala?
I am trying to use a .format m>me m>thod of a string. But if I place %1, %2, etc. in the string, java.util.UnknownFormatConversionException is thrown pointing to a confusing Java source code piece:
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Remove NA values from a vector
..., etc.)
Setting na.rm=TRUE does just what you're asking for:
d <- c(1, 100, NA, 10)
max(d, na.rm=TRUE)
If you do want to remove all of the NAs, use this idiom instead:
d <- d[!is.na(d)]
A final note: Other functions (e.g. table(), lm(), and sort()) have NA-related argum>me m>nts that use d...