References

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## JavaScript ### Implicit Type Coercion ``` > 4 - "2" 2 ``` https://www.safaribooksonline.com/library/view/you-dont-know/9781491905159/ch04.html#implicitly-strings----numbers > The `-` operator is defined only for numeric subtraction, so [4 - "2"] forces ["2"]'2 value to be coerced to a number ``` > 4 + "2" 42 ``` https://www.safaribooksonline.com/library/view/you-dont-know/9781491905159/ch04.html#implicitly-strings----numbers > According to the ES5 spec, section 11.6.1, the + algorithm (when an object > value is an operand) will concatenate if either operand is either already a > string ... ``` > 1 == "1" True ``` https://www.safaribooksonline.com/library/view/you-dont-know/9781491905159/ch04.html#loose-equals-vs-strict-equals > == allows coercion in the equality comparison and === disallows coercion. http://2ality.com/2012/01/object-plus-object.html https://www.ecma-international.org/ecma-262/#sec-addition-operator-plus ## Interlude: Ducks https://www.destroyallsoftware.com/talks/wat ## Ruby https://ruby-doc.org/core-2.5.0/doc/syntax/precedence_rdoc.html https://whatthefuckruby.tumblr.com/post/70164947137/irb-not-true-false-true-irb-not-true ## Python Amy Hanlon "Investigating Python Wats", PyCon US 2015 https://www.youtube.com/watch?v=sH4XF6pKKmk ## Haskell http://adamesterline.com/haskell/2015/01/03/Fibonacci-in-Haskell ## Bash https://ryanstutorials.net/bash-scripting-tutorial/bash-arithmetic.php ## Elixir http://www.cursingthedarkness.com/2015/10/the-definitive-all-dancing-all-complete.html ## Go (removed for time, but interesting) https://twitter.com/pasiphae_goals/status/923821863222079488 https://twitter.com/rozaliev/status/923919964720988166 https://golang.org/ref/spec#Operators > The one exception to this rule is that if the dividend x is the most negative value for the int type of x, the quotient q = x / -1 is equal to x (and r = 0) due to two's-complement integer overflow https://golang.org/ref/spec#Integer_overflow ### Scala Default functionality ### Python [Source](www.youtube.com/watch?v=sH4XF6pKKmk) ### Java [Source](http://stackoverflow.com/a/2001861/124019) ### Perl Source: original research. [Explanation](http://stackoverflow.com/a/14046720/124019) ### PHP [Source](http://phpsadness.com/sad/30) http://php.net/manual/en/language.operators.comparison.php#language.operators.comparison.ternary ### Powershell Source: original research. [Documentation](http://fuckpowershell.tumblr.com/post/31777924330/fuck-using-standard-operands) ## Images 'wat' duck, [wat](https://www.destroyallsoftware.com/talks/wat), Gary Bernhardt 'wat' duck, Sydney, [hofman](https://imgur.com/gallery/gqilq) https://www.florentijnhofman.nl/ # Further Reading [Contempt Culture](https://blog.aurynn.com/2015/12/16-contempt-culture), auyrnn shaw [Why I love Legacy DevOps](https://recompilermag.com/issues/issue-4/why-i-love-legacy-devops/), Katie McLaughlin, [The Recompiler, Issue 4](https://recompilermag.com/issues/issue-4/)