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Assign variable in if condition statement, good practice or not? [closed]
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I wouldn't recommend it. The problem is, it looks like a common error where you try to compare values, but use a single = instead of == or ===. For example, when you see this:
if (value = someFunction()) {
...
}
you don't know if that's what they meant to do, or if they intended to...
Return empty cell from formula in Excel
... a formula in a cell in Excel must be a number, text, logical (boolean) or error. There is no formula cell value type of "empty" or "blank".
One practice that I have seen followed is to use NA() and ISNA(), but that may or may not really solve your issue since there is a big differrence in the way ...
Multi-statement Table Valued Function vs Inline Table Valued Function
...dTable which I cannot extract CompNo and CompYr and would get a conversion error if I tried. So, my query was in two part, an inner query that returned only tables formatted like 'C_______' then the outer query did a sub-string and int conversion. ie Cast(Substring(2, 2) as int) as CompNo. All loo...
How to change the default GCC compiler in Ubuntu?
... this way, but it still uses g++-7 standard libraries, and now i'm getting errors with undefined __builtin stuff.
– Youda008
May 1 '19 at 8:17
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return query based on date
... {
$sort: { createdAt: 1 }
}
])
console.log(data)
} catch(error) {
console.log(error)
}
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Bash if [ false ] ; returns true
...lpful but in ubuntu 18.04 $0 was "-bash" and the basename command threw an error. Changing that test to [[ "$0" =~ "bash" ]] made the script work for me.
– WiringHarness
Nov 22 '19 at 12:37
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Wget output document and headers to STDOUT
...considered debugging information and as such they are sent to the standard error rather than the standard output. If you are redirecting the standard output to a file or another process, you will only get the document contents.
You can try redirecting the standard error to the standard output as a ...
How to reference generic classes and methods in xml documentation
...trick to find the correct notation, without having to go through trial-and-error. Kudos my man
– Peter
Nov 10 '16 at 8:30
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Can virtual functions have default parameters?
... B;
A* pa = pb;
pa->f(); //OK, calls pa->B::f(7)
pb->f(); //error: wrong number of arguments for B::f()
}
Here is a sample program to demonstrate what defaults are picked up. I'm using structs here rather than classes simply for brevity -- class and struct are exactly the same i...
Any reason not to use '+' to concatenate two strings?
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TypeError Traceback (most recent call last)
/home/izkata/<ipython console> in <module>()
/home/izkata/<ipython console> in foo(zeta)
TypeError: cannot concatenate 'str' and 'in...