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How can I use Bash syntax in Makefile targets?
...r GNU Make. Each target can have its own variable assignments, like this:
all: a b
a:
@echo "a is $$0"
b: SHELL:=/bin/bash # HERE: this is setting the shell for b only
b:
@echo "b is $$0"
That'll print:
a is /bin/sh
b is /bin/bash
See "Target-specific Variable Values" in the docume...
How to get the index of a maximum element in a numpy array along one axis
...eading. It calculates the index of the maximum element of the array across all axis, not along a given axis as the OP asks: it is wrong. Moreover, if there is more than one maximum, it retrieves the indices of only the first maximum: this should be pointed out. Try with a = np.array([[1,4,3],[4,3,1]...
Emulate ggplot2 default color palette
...
It is just equally spaced hues around the color wheel, starting from 15:
gg_color_hue <- function(n) {
hues = seq(15, 375, length = n + 1)
hcl(h = hues, l = 65, c = 100)[1:n]
}
For example:
n = 4
cols = gg_color_hue(n)
dev.new(...
Objective-C class -> string like: [NSArray className] -> @“NSArray”
...
Class arrayClass = NSClassFromString (name);
id anInstance = [[arrayClass alloc] init];
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Default value of BOOL
...nce variables of Objective-C objects are always set to 0 (or nil) when you allocate an object" and I cannot find any other, clearer, reference, so it's all a bit contradictory to me.
– Kristof Van Landschoot
Sep 9 '13 at 8:47
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Can a Windows batch file determine its own file name?
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%0 returns the way the file was called. If a full path was used, %0 will have that. If you cd into the dir first and execute the batch from there, %0 will usually not have the path info (but you could get that from %cd% in that case)
– ...
Why do we have map, fmap and liftM?
Why do we have three different functions that do essentially the same thing?
1 Answer
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How does one escape backslashes and forward slashes in VIM find/search?
...erent delimiter instead:
:%s@<doc/>@<cat\\>@
This saves you all typing all those time-consuming, confusing backslashes in patterns with a ton of slashes.
From the documentation:
Instead of the / which surrounds the pattern and replacement string, you
can use any other single-b...
Difference between string and char[] types in C++
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A char array is just that - an array of characters:
If allocated on the stack (like in your example), it will always occupy eg. 256 bytes no matter how long the text it contains is
If allocated on the heap (using malloc() or new char[]) you're responsible for releasing the memory...
Batch file to copy directories recursively
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There are examples, 2/3 down the page. Of particular use is:
To copy all the files and subdirectories (including any empty subdirectories) from drive A to drive B, type:
xcopy a: b: /s /e
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