21 lines
1.2 KiB
Markdown
Executable File
21 lines
1.2 KiB
Markdown
Executable File
---
|
||
note type:
|
||
- theory
|
||
date: 2026-06-19
|
||
done: true
|
||
---
|
||
The **ternary operator**, also known as the **conditional operator**, is a concise way to write an **if-else** statement in a single line by evaluating a **condition** and returning one of two values. It is called "ternary" because it operates on **three operands**: the condition, the expression to execute if true, and the expression to execute if false.
|
||
|
||
The standard syntax is:
|
||
|
||
```
|
||
condition ? expression_if_true : expression_if_false
|
||
```
|
||
|
||
Key characteristics include:
|
||
|
||
- **Short-Circuit Evaluation**: Only the expression corresponding to the evaluated condition is executed.
|
||
- **Readability**: It enhances code brevity for simple logic but can reduce maintainability if nested excessively.
|
||
- **Language Support**: It is widely supported in C-like languages (C, C++, Java, JavaScript, C#) and has variations in others (e.g., Python uses `value_if_true if condition else value_if_false`).
|
||
- **Performance**: It generally has negligible performance differences compared to standard if-else blocks, as modern compilers optimize both similarly.
|
||
- **Association**: In most languages, the operator is **right-associative**, allowing for chained conditions similar to `if...else if...else` chains. |