refactoring – Page 30 – Türker Yıldırım

preg_replace_callback_array for several patterns at once

NoteSeptember 14, 20161 min read

Applying several regular expressions with different callbacks meant chaining preg_replace_callback() calls, each re-scanning the whole subject — three patterns, three passes. Patterns are applied in the order given…

Debounce a function with ES6

SnippetSeptember 11, 20161 min read

Uniform variable syntax changed what $$a means

NoteJune 16, 20161 min read

PHP 7 made variable-variable expressions evaluate consistently left to right. That is an improvement and it silently changed the meaning of expressions that had been working for a…

Null coalescing chains, and where null still gets through

NoteJune 14, 20161 min read

?? chains left to right and returns the first operand that is not null, which reads like a safe navigation operator and is not one. It only guards…

The N+1 queries you did not write

Deep diveJune 3, 20168 min read

1,400 queries on a page showing 40 rows. Eager loading, the difference between with() and load(), and the accessor that no eager load can fix.

Deep clone an object in JavaScript

SnippetMay 17, 20161 min read

The strangler pattern needs a router in front of it

NoteApril 28, 20161 min read

Replacing a system incrementally requires something able to send some requests to the old implementation and some to the new. Without it, the migration is all-or-nothing however carefully…

Read a huge file line by line in PHP

SnippetApril 14, 20161 min read

Flatten a nested array in PHP

SnippetApril 7, 20161 min read

The null coalescing operator replaces the isset ternary

NoteMarch 30, 20161 min read

Reading a possibly-absent array key has meant naming the expression twice — once in isset(), once as the value — which is fine until the expression is $config[‘db’][‘replicas’][0]…