with() Changes Variable Scope?!
๐ฅ DEPRECATED BUT STILL WORKS! The 'with' statement changes your scope and makes variables magically refer to object properties! Banned in strict mode but still in old codebases. This caused HUGE security bugs!
#javascript #javascripttricks #codingchallenge #withstatement #scope #javascriptquiz #javascriptweird #javascriptwtf #deprecated #javascriptbugs #javascriptshorts
Object Keys Get AUTO-SORTED?!
Object key order is NOT guaranteed! Numeric string keys get SORTED before other keys. You add 'b' first but '1' appears first in Object.keys()! This auto-sorting will DESTROY your expected order!
#javascript #javascripttricks #object.keys #keyordering #numerickeys #javascriptweird #javascriptquiz #codingchallenge #javascriptshorts #javascriptwtf #objectquirks #advancedjavascript
Yโknowโฆ itโd be super-fun if there was a way to have @pomโs moon avatar photo change/update to actually follow the phases of the moon!
(Sadly, I lack the skills to do it.)
I wonder if anyone knows how, or knows someone whoโฆ ๐คทโโ๏ธ
#Moon #PhasesOfTheMoon #Mastodon #Avatars #MastoArt #AskFedi #Coding #CodingChallenge #Javascript #Programming #Fun #Ideas
PHP strcmp vs == Comparison
Stop scrolling! PHP strcmp() and == compare differently. See '10' vs '10.0'. The difference will shock you!
#php #phptricks #codingtips #programmingtutorial #phpstrcmp #stringcomparison #phpstrings #phpquiz #codingchallenge #phpshorts #stringfunctions #phpcomparison
Labels Let You BREAK NESTED Loops?!
๐ฅ SECRET FEATURE! You can break out of nested loops using labels! outer: for... break outer; This skips BOTH loops at once! Senior devs don't even know this. Save this for your next interview!
#javascript #javascripttricks #codingchallenge #labeledstatements #breakstatement #nestedloops #javascriptquiz #javascriptweird #codinginterview #codingtips #javascriptshorts
Boolean Conversion Of Empty List
Empty list equals False! Watch bool([]) and understand Python's truthiness rules!
#python #pythontricks #booleanconversion #pythontruthiness #codingchallenge #pythonshorts
new Function() Ignores Local Scope?!
Function constructor is DANGEROUS! It always runs in GLOBAL scope, ignoring any variables in the enclosing function. Your local 'x' becomes invisible. This scoping behavior will cause HIDDEN bugs!
#javascript #javascripttricks #functionconstructor #globalscope #variablescope #javascriptweird #javascriptquiz #codingchallenge #javascriptshorts #javascriptwtf #scopequirks #advancedjavascript
Tagged Template Does MATH in Strings?!
Tagged templates can EXECUTE CODE! The tag function receives values and can transform them. This one DOUBLES every number. String interpolation becomes code execution!
#javascript #javascripttricks #taggedtemplates #templateliterals #stringinterpolation #javascriptweird #javascriptquiz #codingchallenge #javascriptshorts #javascriptwtf #templateprocessing #advancedjavascript
PHP Magic Constants Behavior
Watch this! PHP magic constants change based on context. See __LINE__ and __FUNCTION__ in different scopes. Perfect for debugging!
#php #phptricks #codingtips #programmingtutorial #phpmagicconstants #phpdebugging #phpconstants #phpquiz #codingchallenge #phpshorts #phpfeatures #debugging
Three-Valued Logic: AND - OR With NULL?!
SQL has THREE truth values: TRUE, FALSE, and UNKNOWN (NULL)! AND/OR with NULL creates logic that breaks everything! Watch!
#sql #sqltricks #database #sqltutorial #threevaluedlogic #null #sqlquiz #codingchallenge #sqlshorts #sqlbugs #booleanlogic #sqlwtf
JavaScriptBuzz
David G. Smith
Turbo Learn PHP
Python Peak
PrecisionSQL