Why does `<<` append to a Ruby string while `+=` does not?
74854
Are strings mutable in Ruby?
90524
What does map(&:name) do in this Ruby code?
75469
Why does Ruby's String#to_i sometimes return 0 when the string contains a number?
97291
if(!x) vs if(x==false) in ruby
142924
Why allow concatenation of string literals?
96849
What does =~ do in Perl?
88332
Why does 1.__add__(1) yield a syntax error?
10475
Operator precedence for  And/&& in Ruby
109567
How does operator  work when comparing two strings?
71405
String Concatenation Vs String Builder Append
68344
Concatenating strings, unevaluated expressions and evaluated expressions/values
116185
Why there are line breaks when PutAppend a string to file?
107960
Code block passed to each works with brackets but not with 'do'-'end' (ruby)
22190
Is there a "do ... while" loop in Ruby?
132627
Equivalent of "continue" in Ruby
141442
Why does my string comparison fail?
37356
Why is ++i considered an l-value, but i++ is not?