Chemical substance can be transmuted into another element through a nuclear reaction. This is so, because all of the atoms in a sample of an element have the same number of protons, though they may be different isotopes, with differing numbers of neutrons. As of 2012, there are 118 known elements, about 80 of which are stable – that is, they do not change by radioactive decay into other elements. Some elements can occur as more than a single chemical substance (allotropes). For instance, oxygen exists as both diatomic oxygen (O) and ozone (O). The majority of elements are classified as metals.
There's more than one way to do it There's more than one way to do it There's more than one way to do it (TMTOWTDI or TIMTOWTDI, pronounced "Tim Toady") is a Perl programming motto. The language was designed with this idea in mind, in that it “doesn't try to tell the programmer how to program.” As proponents of this motto argue, this philosophy makes it easy to write concise statements like print if 1..3 or /match/ or the more traditional or even the more verbose: use English; if ($INPUT_LINE_NUMBER >= 1 and $INPUT_LINE_NUMBER <= 3 or $ARG =~ m/match/) { This motto has been very much discussed