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There's also a negated version of it:+ This is provided as a more readable version of '''if (!condition)'''.+ Note that the braces are required in Perl, even if you've only got one line in the block. However, there is a clever way of making your one-line conditional blocks more English like:+ There's also a negated version, for the same reason we have '''unless''' :+ You can also use '''while''' in a post-condition:+ Exactly like C:+
}
}
−There's also a negated version of it:
unless ( condition ) {
unless ( condition ) {
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}
}
−This is provided as a more readable version of '''if (!condition)'''.
−Note that the braces are required in Perl, even if you've only got one line in the block. However, there is a clever way of making your one-line conditional blocks more English like:
# the traditional way
# the traditional way
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}
}
−There's also a negated version, for the same reason we have '''unless''' :
until ( condition ) {
until ( condition ) {
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}
}
−You can also use '''while''' in a post-condition:
print "LA LA LA\n" while 1; # loops forever
print "LA LA LA\n" while 1; # loops forever
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==== for ====
==== for ====
−Exactly like C:
for ($i = 0; $i <= $max; $i++) {
for ($i = 0; $i <= $max; $i++) {
