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Small, practical examples. Search by task or narrow things down below.

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GitInspecting the working tree

Explain which ignore rule matches a file

Git: check-ignore -v reports the source file, line, pattern, and matched path.

Git✓ Tested
Docker / ComposeImage management

Export a container filesystem into a new image

Docker / Compose: export contains filesystem data; import creates a new image from it.

Docker / Compose✓ Tested
Bash ScriptsProcesses & environment

Export a value to child processes

Bash Scripts: Only exported shell variables are inherited through the environment.

Bash Scripts✓ Tested
GitTags & repository configuration

Export committed files without the Git metadata directory

Git: Git archive creates a snapshot of tracked committed files only.

Git✓ Tested
AngularLists & control flow

Expose the current index in @for

Expose the current index in @for with a standalone Angular component and explicit browser behavior.

Angular✓ Tested
ReactCustom hooks

Extract reusable toggle behavior

Extract reusable toggle behavior with a small React component and explicit browser behavior.

React✓ Tested
CSSGrid placement

Fill grid rows before moving to the next column

CSS: Column auto-flow fills the explicitly declared rows in each successive implicit column.

CSS✓ Tested
TypeScriptCollections & records

Filter and transform an array

Keep active objects and extract their names.

filter✓ Tested
GitCommit history & revision selection

Filter history by its author identity

Git: The author filter selects commits by their recorded author metadata.

Git✓ Tested
SQLReporting & grouped calculations

Filter rows before grouping

SQL: WHERE limits the rows contributing to the aggregate; it differs from filtering completed groups with HAVING.

SQL✓ Tested
SQL ServerReporting & grouped calculations

Filter rows before grouping

SQL Server: WHERE limits the rows contributing to the aggregate; it differs from filtering completed groups with HAVING.

SQL Server✓ Tested
PostgresReporting & grouped calculations

Filter rows before grouping

Postgres: WHERE limits the rows contributing to the aggregate; it differs from filtering completed groups with HAVING.

Postgres✓ Tested