Python: x = "p", why does x[:-2] return an empty string instead of "p"?
2622
Understanding slice notation
27902
What is the purpose of the single underscore "_" variable in Python?
151816
What is the semantics of 'is' operator in Python?
27572
What's the u prefix in a Python string?
12242
How does string equality work in JavaScript?
82662
string = string + int: What's behind the scenes?
36929
Why does comparing strings using either '==' or 'is' sometimes produce a different result?
63656
Ways to write 'P => Q'
75469
Why does Ruby's String#to_i sometimes return 0 when the string contains a number?
146486
Why isn't [ -n ] false like [ -n "" ]?
152799
What does a b prefix before a python string mean?
146891
Why is $\{\emptyset\} \not = \emptyset$?
145497
What does the  operator do in python?
70585
Why does Assuming[x > 0, TrueQ[x > 0]] return False?
132614
Python, what does an underscore before parenthesis do
127745
Why does 2 == [2] in JavaScript?
138778
How do I evaluate a variable with a string in the POSIX shell?