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Results for “try catch”

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

186 snippets foundClear filters
Docker / ComposeCompose service options

Override the image entrypoint in Compose

Docker / Compose: entrypoint and command combine as executable and arguments.

Docker / Compose✓ Tested
PythonFunctions & error handling

Raise and catch a domain-specific exception

Python: Give a validation failure its own exception type so callers can handle it narrowly.

Python✓ Tested
Bash ScriptsArray operations

Read an optional associative-array entry

Bash Scripts: Use a fallback expansion when a map key may not be present under nounset.

Bash Scripts✓ Tested
JavaScriptObject behavior & collections

Remove a Map entry and detect whether it existed

JavaScript: Map.delete returns true only when an entry was present.

JavaScript✓ Tested
TypeScriptObject behavior & collections

Remove a Map entry and detect whether it existed

TypeScript: Map.delete returns true only when an entry was present.

TypeScript✓ Tested
C++Containers & compound values

Remove a map entry and inspect the number removed

C++: erase by key reports whether a unique-key map contained the entry.

C++✓ Tested
RustMaps & sets

Remove an entry and inspect its value

Remove an entry and inspect its value in a complete Rust program using the standard library.

Rust✓ Tested
PowerShellHashtables & object records

Remove an optional hashtable entry

PowerShell: Remove changes the map in place without changing unrelated entries.

PowerShell✓ Tested
PythonMappings & sets

Remove and return a dictionary entry

Python: Use pop with a default when a missing entry is an expected condition.

Python✓ Tested
GoConcurrency & cancellation

Try a channel receive without blocking

Try a channel receive without blocking using a complete Go program with explicit sample inputs.

Go✓ Tested
C#Strings

Try parsing an integer

Use TryParse to avoid exceptions for invalid C# integer input.

C#✓ Tested
PowerShellHashtables & object records

Use a fallback for a missing hashtable entry

PowerShell: Test the key explicitly so legitimate false or zero values are preserved.

PowerShell✓ Tested