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