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铂赛东
2022-10-12
Contents

🌳Loop mode

Starting from v2.9.0, LiteFlow provides loop expression syntax.

# FOR

The FOR loop expression is used for a fixed number of loops. The usual usage is:

<chain name="chain1">
    FOR(5).DO(THEN(a, b));
</chain>

The above expression means that a->b loops 5 times.

If you are not sure how many times to loop when you define the rule, you can also define it like this:

<chain name="chain1">
    FOR(f).DO(THEN(a, b));
</chain>

The f node needs to be For Component, and returns an int loop count. For how to define it, please refer to For component.

# WHILE

The WHILE loop expression is used for conditional looping and is usually used as:

<chain name="chain1">
    WHILE(w).DO(THEN(a, b));
</chain>

The w node needs to be While component and returns a boolean value. If it is true, the loop will continue. For how to define it, please refer to While component.

# BREAK

LiteFlow also supports the BREAK syntax, which means break out of the loop.

The BREAK keyword can be followed by FOR and WHILE, and is usually used as follows:

<chain name="chain1">
    FOR(f).DO(THEN(a, b)).BREAK(c);
</chain>
<chain name="chain1">
    WHILE(w).DO(THEN(a, b)).BREAK(c);
</chain>

The c node needs to be Break component, returning a boolean value, and exiting the loop if true. For how to define it, please refer to Break component.

Help us improve this document (opens new window)
last update: 2022/10/13, 00:02:27
🌵If mode
🍁Use sub chain

← 🌵If mode 🍁Use sub chain→

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