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find(): returning the first matching item
find() returns the first appropriate item, not a list. In the absence of a match, the result is undefined.
Published22 Oct 2026
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Technology
findIndex(): zero is a valid result
The method returns a position, and in the absence of a match -1.
Published22 Oct 2026
Technology
findLast(): last match in array
The search starts at the end and returns the value, not the index.
Published22 Oct 2026
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flat(): how many levels to remove
The flattening has a set depth and returns a new array.
Published22 Oct 2026
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flatMap(): from one record to zero or several
The transformation and removal of one nested level occur together.
Published22 Oct 2026
Technology
Fnmatch: filename patterns rather than regular expressions
fnmatch compares names with shell-style patterns. fnmatch.fnmatchcase('report.csv', '*.csv') is True, and fnmatchcase preserves case sensitivity.
Published22 Oct 2026
Technology
focus-visible: visible focus when working with a keyboard
The selector allows a style of focus according to the browser's judgment that the indicator should be visible.
Published22 Oct 2026
Technology
font-display: swap shows the text before the web font
Early readability may be followed by a change of arrangement.
Published22 Oct 2026
Technology
font-kerning adjusts the distance between specific pairs
Kerning is not a general spacing of all letters.
Published22 Oct 2026
Technology
For-each-ref: formatting a reference listing
git for-each-ref iterates matching references with selected fields, ordering and formatting. It is clearer for automation than accidentally parsing decorative human output.
Published22 Oct 2026
Technology
Form labels: how the field gets an understandable name
The visible inscription next to a field and its programmatic relationship with it are separate things. The HTML element label allows this link to be explicitly described.
Published22 Oct 2026
Technology
Format-patch: transferring changes with commit metadata
git format-patch prepares files for transferring changes, including commit messages and metadata. Creating them does not automatically send email.
Published22 Oct 2026