Category:Smalltalk: Difference between revisions
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=== Other === |
=== Other === |
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<lang smalltalk>expr1 . expr2 "statements within a method or block are separated by a fullstop." |
<lang smalltalk>expr1 . expr2 "statements within a method or block are separated by a fullstop." |
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foo := bar "assignment; let foo refer to the object to which bar refers to |
foo := bar "assignment; let foo refer to the object to which bar refers to |
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(at that particular point in time)" |
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^ a + 1 "return; the value of |
^ a + 1 "return; the value of 'a+1' as the value of the current method invocation." |
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'hello' print. 'world' print "statements are separated by a period; just like in english" |
'hello' print. 'world' print "statements are separated by a period; just like in english" |
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|a b c| "local variables; introduces 'a', 'b' and 'c' in the current scope |
|a b c| "local variables; introduces 'a', 'b' and 'c' in the current scope |
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(let-like local bindings)" |
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r msg1; msg2 |
r msg1; msg2 "so called cascade; |
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first send msg1 to r, ignoring the return value, |
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then send msg2. |
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The value of the expression is result from last message. |
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Syntactic sugar for (t := r) msg1. t msg2 |
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but an expression, not a statement (with an anonymous variable 't')"</lang> |
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=== Class Definition === |
=== Class Definition === |
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