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Diffstat (limited to 'pod/perlvar.pod')
| -rw-r--r-- | pod/perlvar.pod | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/pod/perlvar.pod b/pod/perlvar.pod index a43ab6082b..309425179f 100644 --- a/pod/perlvar.pod +++ b/pod/perlvar.pod @@ -686,6 +686,8 @@ of perl in the right bracket?) Example: See also the documentation of C<use VERSION> and C<require VERSION> for a convenient way to fail if the running Perl interpreter is too old. +See C<$^V> for a more modern representation of the Perl version. + =item $COMPILING =item $^C @@ -854,6 +856,26 @@ The time at which the program began running, in seconds since the epoch (beginning of 1970). The values returned by the B<-M>, B<-A>, and B<-C> filetests are based on this value. +=item $^V + +The revision, version, and subversion of the Perl interpreter, represented +as a "version tuple". Version tuples have both a numeric value and a +string value. The numeric value is a floating point number that amounts +to revision + version/1000 + subversion/1000000, and the string value +is made of utf8 characters: +C<chr($revision) . chr($version) . chr($subversion)>. + +This can be used to determine whether the Perl interpreter executing a +script is in the right range of versions. (Mnemonic: use ^V for Version +control.) Example: + + warn "No "our" declarations!\n" if $^V and $^V lt v5.6; + +See also the documentation of C<use VERSION> and C<require VERSION> +for a convenient way to fail if the running Perl interpreter is too old. + +See also C<$]> for an older representation of the Perl version. + =item $WARNING =item $^W |