171 lines
2.5 KiB
Text
171 lines
2.5 KiB
Text
# Conditional
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If-then-else in a functional-style.
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## Usage
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### if-then
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[[source,java]]
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----
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if (isTrue()) {
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doSomething();
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}
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----
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[[source,java]]
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----
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Condition.where(isTrue())
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.then(() -> doSomething());
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----
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### if-then-else
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[[source,java]]
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----
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if (isTrue()) {
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doSomething();
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} else {
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doSomethingElse();
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}
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----
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[[source,java]]
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----
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Condition.where(isTrue())
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.then(() -> doSomething())
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.otherwise(() -> doSomethingElse());
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----
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### if-and-then-else
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[[source,java]]
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----
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if (isTrue() && isAlsoTrue()) {
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doSomething();
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} else {
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doSomethingElse();
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}
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----
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[[source,java]]
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----
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Condition.where(isTrue())
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.and(isAlsoTrue())
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.then(() -> doSomething())
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.otherwise(() -> doSomethingElse());
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----
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### if-or-then-else
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[[source,java]]
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----
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if (isTrue() || alternativeIsTrue()) {
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doSomething();
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} else {
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doSomethingElse();
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}
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----
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[[source,java]]
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----
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Condition.where(isTrue())
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.or(alternativeIsTrue())
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.then(() -> doSomething())
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.otherwise(() -> doSomethingElse());
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----
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### if-not-then-else
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[[source,java]]
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----
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if (!isFalse()) {
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doSomething();
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} else {
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doSomethingElse();
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}
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----
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[[source,java]]
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----
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Condition.whereNot(isFalse())
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.then(() -> doSomething())
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.otherwise(() -> doSomethingElse());
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----
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### if-and-not-then-else
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[[source,java]]
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----
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if (isTrue() || !isFalse()) {
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doSomething();
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} else {
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doSomethingElse();
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}
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----
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[[source,java]]
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----
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Condition.where(isTrue())
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.andNot(isFalse())
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.then(() -> doSomething())
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.otherwise(() -> doSomethingElse());
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----
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### if-or-not-then-else
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[[source,java]]
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----
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if (isFalse() || !isAlsoFalse()) {
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doSomething();
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} else {
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doSomethingElse();
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}
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----
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[[source,java]]
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----
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Condition.where(isFalse())
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.orNot(isAlsoFalse())
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.then(() -> doSomething())
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.otherwise(() -> doSomethingElse());
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----
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### if-then-else-if
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[[source,java]]
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----
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if (isFalse()) {
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doSomething();
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} else if (isTrue()) {
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doSomethingElse();
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}
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----
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[[source,java]]
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----
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Condition.where(isFalse())
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.then(() -> doSomething())
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.otherwise(isTrue())
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.then(() -> doSomethingElse());
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----
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### if-then-if-then
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[[source,java]]
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----
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if (isTrue()) {
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doSomething();
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if (isAlsoTrue()) {
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doSomethingElse();
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}
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}
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----
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[[source,java]]
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----
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Condition.where(isTrue())
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.then(() -> doSomething())
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.and(isAlsoTrue())
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.then(() -> doSomethingElse());
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----
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