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Bash empty array expansion with `set -u`
....4.
$ bash --version | head -n 1
GNU bash, version 4.4.19(1)-release (x86_64-pc-linux-gnu)
$ set -u
$ arr=()
$ echo "foo: '${arr[@]}'"
foo: ''
There is a conditional you can use inline to achieve what you want in older versions: Use ${arr[@]+"${arr[@]}"} instead of "${arr[@]}".
$ function a...
How can I update npm on Windows?
...
Note 32 and 64 bit MSIs. Do not just click on "Windows Installer" link - that's 32 bit. Check where your current nodejs resides, in "Program Files" or on "Program Files (x86)". The "x86" means 32-bit. See the comments below about "old ...
Is there some way to PUSH data from web server to browser?
...
Dan HerbertDan Herbert
87.1k4343 gold badges171171 silver badges215215 bronze badges
...
What is the difference between the kernel space and the user space?
...ion.
– MeLikeyCode
May 22 '17 at 18:46
1
@MeLikeyCode Isn't that a justifiable simplification in ...
How do you access a website running on localhost from iPhone browser
...er that worked on my 10s, thank you so much!
– LAdams87
Jul 30 '19 at 12:45
1
This works, but see...
What is reflection and why is it useful?
...
87
Uses of Reflection
Reflection is commonly used by programs which require the ability to examin...
Python: List vs Dict for look up table
...
– Thomas Guyot-Sionnest
Oct 27 '16 at 14:46
2
@ThomasGuyot-Sionnest The built in set was introduced in...
TSQL - Cast string to integer or return default value
...yConvertInt(@Value varchar(18))
RETURNS int
AS
BEGIN
SET @Value = REPLACE(@Value, ',', '')
IF ISNUMERIC(@Value + 'e0') = 0 RETURN NULL
IF ( CHARINDEX('.', @Value) > 0 AND CONVERT(bigint, PARSENAME(@Value, 1)) <> 0 ) RETURN NULL
DECLARE @I bigint =
CASE
WHEN C...
Lombok is not generating getter and setter
...equired.
– nanosoft
Mar 5 '15 at 19:46
2
Well done @Elidosa --- It's working, but yes need to Exi...
How can I get nth element from a list?
...
87
Personally I can't comprehend how an at-index accessor that doesn't return a Maybe type is acceptable as idiomatic Haskell. [1,2,3]!!6 will...