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Test for equality among all elements of a single vector
...ing by the mean:
# Determine if range of vector is FP 0.
zero_range <- function(x, tol = .Machine$double.eps ^ 0.5) {
if (length(x) == 1) return(TRUE)
x <- range(x) / mean(x)
isTRUE(all.equal(x[1], x[2], tolerance = tol))
}
If you were using this more seriously, you'd probably want to...
How do I declare class-level properties in Objective-C?
...c variable? E.g. only one instance for all types of Foo?
To declare class functions in Objective-C you use the + prefix instead of - so your implementation would look something like:
// Foo.h
@interface Foo {
}
+ (NSDictionary *)dictionary;
// Foo.m
+ (NSDictionary *)dictionary {
static NSDict...
Highlight all occurrence of a selected word?
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is there a way to use this functionality but with the highlighted one or more words?
– Sung Cho
Aug 6 '18 at 1:27
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Formula px to dp, dp to px android
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nice. should be marked as best answer. kotlin: private fun dpToPx(dp: Int) = (dp * Resources.getSystem().displayMetrics.density).toInt()
– Raphael C
Jan 16 at 14:13
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Convert MySql DateTime stamp into JavaScript's Date format
...:MM:SS and either parse it or convert it to work in JavaScript's Date() function, for example:- Date('YYYY, MM, DD, HH, MM, SS);
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What is the behavior of integer division?
... out with negative numbers when you are stuck with a C89 compiler.
It's a fun fact that C99 chose truncation towards zero because that was how FORTRAN did it. See this message on comp.std.c.
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Remove a fixed prefix/suffix from a string in Bash
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Fun note: sed can take almost anything as a delimiter. In my case, since I was parsing prefix-directories out of paths, I couldn't use /, so I used sed "s#^$prefix##, instead. (Fragility: filenames can't contain #. Since I...
MySQL Query to select data from last week?
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SELECT id FROM tbl
WHERE date >= curdate() - INTERVAL DAYOFWEEK(curdate())+6 DAY
AND date &...
How can I ssh directly to a particular directory?
...ber to do it every time (unless you make an alias) so it seems a bit less "fun".
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Why should I use a semicolon after every function in javascript?
I've seen different developers include semicolons after functions in javascript and some haven't. Which is best practice?
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