SameQ

lhs===rhs
yields True if the expression lhs is identical to rhs, and yields False otherwise.

DetailsDetails

  • SameQ requires exact correspondence between expressions, except that it still considers Real numbers equal if they differ in their last binary digit.
  • 2===2. gives False.
  • e1===e2===e3 gives True if all the are identical.

ExamplesExamplesopen allclose all

Basic Examples  (2)Basic Examples  (2)

Test whether two expressions are identically the same:

In[1]:=
Click for copyable input
Out[1]=
In[2]:=
Click for copyable input
Out[2]=

== remains symbolic unless literal values are given:

In[3]:=
Click for copyable input
Out[3]=

Full form:

In[1]:=
Click for copyable input
Out[1]=
Introduced in 1988
(1.0)
Translate this page: