Differences

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--- at:tutorial:basic [2007/04/17 17:23] – tvcutsem
+++ at:tutorial:basic [2007/04/17 17:26] – tvcutsem
@@ Line 272: / Line 272: @@
 ==== Numerical data types ====
-AmbientTalk supports numbers and fractions which represent what other languages call integers and floating point numbers, respectively.
+AmbientTalk supports numbers and fractions which represent what other languages call integers and double precision floating point numbers, respectively.
-Note that since numerical types are objects in AmbientTalk, the traditional operators +,-,*,/, >, <, <=, >=, =, !=  are nothing but syntactic sugar for method invocations. Therefore,  //1+1// is internally translated into //1.+(1)//. Unary operators are just applications, e.g. //-5// is internally translated into //-(5)//. What follows are some basic examples of manipulations with numeric types:
+Note that since numerical types are objects in AmbientTalk, the traditional operators %%+,-,*,/, >, <, <=, >=, =, !=%%  are nothing but syntactic sugar for method invocations. Therefore,  ''1+1'' is internally translated into ''1.+(1)''. Unary operators are just applications, e.g. ''-5'' is internally translated into ''-(5)''. What follows are some basic examples of manipulations with numeric types:
 <code>
 >1.inc()
 >>2
->-1.abs()
->>1
 >1.cos()
 >>0.5403023058681398
@@ Line 293: / Line 291: @@
 >>2
 </code>
+Beware of the precedence rules for function application versus method invocation, which may lead to unexpected results, e.g.:
+<code>
+>-1.abs()
+>>-1
+</code>
+This code is interpreted as ''-(1.abs())'', hence the result.
 Numbers also support some useful iterator methods such as: