Help:Parameter default: Difference between revisions

Revision as of 08:23, 25 June 2019

Revision as of 08:24, 25 June 2019

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Since v@=null we can also take make the concatenation the outer operation:

<code>[v[''i''|@] | [sep|]] [v[''i''|@] | {{[call]|[pc1|]|[pc2|]|[pc3|]|[pc4|]|[pv|1]=[''i'']}} ]</code>

==Conditional statement==

{{Tim|if}} contains:

----

<pre>{{{else{{{test|}}}|{{{test{{{test|}}}|{{{then|}}}}}}}}}</pre>

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or in short form:

[ else[test|] | [ test[test|] | [then|] ] ]

If [test] is defined this reduces to

[ else[test] | [ test[test] | [then|] ] ]

For test equal to null this reduces to [else|]; otherwise, if no parameter name starting with "test" or "else" applies except these themselves, then this reduces to [then|].

If [test] is undefined we get

[ else | [then|] ]