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Delete all but the most recent X files in bash
...'NR>5' | xargs rm -f if you prefer pipes and you need to suppress the error if there is nothing to be deleted.
– H2ONaCl
Jul 30 '14 at 7:58
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Make a link open a new window (not tab) [duplicate]
... @JeanGkol I rewrote my answer to clarify the issue. Technically, it is working, because it opens a new browsing context (like it is supposed to do). The problem is, that in modern browsers "browsing context" is a tab instead of a window (you can change this in the settings though).
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See :hover state in Chrome Developer Tools
...vis Northcutt
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3
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How can you find the height of text on an HTML canvas?
The spec has a context.measureText(text) function that will tell you how much width it would require to print that text, but I can't find a way to find out how tall it is. I know it's based on the font, but I don't know to convert a font string to a text height.
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How to format Joda-Time DateTime to only mm/dd/yyyy?
...is listing should be in their own docs but you have to do it via trial and error in your own code to see what each format looks like. This is super helpful.
– Joshua Pinter
Aug 28 at 2:13
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Local variables in nested functions
...ints to the local variable cage in the get_petters function.
When you actually call the function, that closure is then used to look at the value of cage in the surrounding scope at the time you call the function. Here lies the problem. By the time you call your functions, the get_petters function i...
In Visual Studio C++, what are the memory allocation representations?
...loc(LMEM_FIXED) to mark uninitialised allocated heap memory
* 0xBADCAB1E : Error Code returned to the Microsoft eVC debugger when connection is severed to the debugger
* 0xBEEFCACE : Used by Microsoft .NET as a magic number in resource files
* 0xCCCCCCCC : Used by Microsoft's C++ debugging runtime l...
Can an enum class be converted to the underlying type?
...ields : unsigned { field = 1 };
// ...
unsigned x = my_fields::field; // ERROR!
unsigned x = static_cast<unsigned>(my_fields::field); // OK
Also mind the fact, that the semicolon should be after the closed curly brace in your enum's definition, not before.
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Find MongoDB records where array field is not empty
All of my records have a field called "pictures". This field is an array of strings.
11 Answers
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How to split a delimited string into an array in awk?
...specific! What do you mean by "it doesn't work"?
Post the exact output (or error message), your OS and awk version:
% awk -F\| '{
for (i = 0; ++i <= NF;)
print i, $i
}' <<<'12|23|11'
1 12
2 23
3 11
Or, using split:
% awk '{
n = split($0, t, "|")
for (i = 0; ++i <= n;)
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