Dada

Dada has asked 4 questions and find answers to 26 problems.

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perl -E 'map{($_="$|0".(eval(($@="tqsjoug#&c#-ify")=~s/./
chr(-1+ord$&)/gre)x2))=~s/./$&?"*":$"/ge,say}(($,=q-0000-
).F830.($@=$_=84).(/.$/,$&)."8$@FC$_$@F8$_$,")=~/.{$&}/g'

Dada questions

Redefining function from standard library
Why are @@, @!, @, etc. not interpolated in strings?

Dada answers

"Redundant argument in printf" warning
Perl: Can't use string ("XXX") as a HASH ref while "strict refs" in use
Reading stdin in perl requires line feeds around input. How to avoid?
Perl: How to pass IPC::Open3 redirected STDOUT/STDERR fhs
Perl defined-or in a list context, why a scalar?
Declaring sets of anonymous arrays in perl
Check a substring is contained in a string and has at least the first 4 characters
Perl conditional (ternary) operator does no shortcut evaluation
Perl switch/case Fails on Literal Regex String Containing Non-Capturing Group '?'
How do I refactor a recursion occurring in a for loop to make it a tail call?