try-catch

Error handling block

Try-catch is a programming construct for handling errors.

Code that might fail goes in the try block; if an error occurs, execution jumps to the catch block instead of crashing the program.

The try-catch prevented the app from dying when the server was unreachable.

Most modern programming languages use this pattern, though syntax varies.

mechanism

exception

Deviation from standard

errorFault in communication
blockSolid mass, or impede
throwPropel by arm motion

finally · handler · clause · statement · syntax · runtime · propagation · unwinding · nesting · scope

errorhandling

fallback

Alternative if primary fails

loggingRecording system events
debuggingError removal from programs
validationConfirming truth or accuracy

defensive · robustness · resilience · fail-safe · recovery · retry · rollback · cleanup · dispose · timeout

languages

Java

Programming language from Sun

JavaScriptWeb programming language
PythonLarge nonvenomous squeezer
C++Object-oriented systems language

C# · PHP · Ruby · Swift · Kotlin · TypeScript · except · defer · promise · callback

Categories

debuggingdebug, debugging, debugger, breakpoint, breakpoints

Opposites

error handling strategy

try-catchinput validation

prevention · assertion · sanitization

programming paradigm for robustness

try-catcherror code

Numbered malfunction message

control flow philosophy

try-catchabort

End before completion

panic · crash and burn · crash

Family

try, catch, trying, catches, caught, catching, catcher, catchy

Familiarity: Top 1,000,000
Profile: Used worldwide · Timeless · Abstract · Rated G