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@@ -98,7 +98,8 @@ data, defined in detail in the corresponding sections that follow.
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{{if pipeline}} T1 {{else}}{{if pipeline}} T0 {{end}}{{end}}
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{{range pipeline}} T1 {{end}}
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The value of the pipeline must be an array, slice, map, or channel.
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The value of the pipeline must be an array, slice, map, iter.Seq,
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iter.Seq2, integer or channel.
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If the value of the pipeline has length zero, nothing is output;
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otherwise, dot is set to the successive elements of the array,
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slice, or map and T1 is executed. If the value is a map and the
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@@ -106,7 +107,8 @@ data, defined in detail in the corresponding sections that follow.
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visited in sorted key order.
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{{range pipeline}} T1 {{else}} T0 {{end}}
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The value of the pipeline must be an array, slice, map, or channel.
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The value of the pipeline must be an array, slice, map, iter.Seq,
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iter.Seq2, integer or channel.
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If the value of the pipeline has length zero, dot is unaffected and
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T0 is executed; otherwise, dot is set to the successive elements
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of the array, slice, or map and T1 is executed.
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@@ -162,37 +164,55 @@ An argument is a simple value, denoted by one of the following.
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the host machine's ints are 32 or 64 bits.
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- The keyword nil, representing an untyped Go nil.
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- The character '.' (period):
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.
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The result is the value of dot.
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- A variable name, which is a (possibly empty) alphanumeric string
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preceded by a dollar sign, such as
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$piOver2
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or
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$
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The result is the value of the variable.
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Variables are described below.
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- The name of a field of the data, which must be a struct, preceded
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by a period, such as
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.Field
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The result is the value of the field. Field invocations may be
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chained:
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.Field1.Field2
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Fields can also be evaluated on variables, including chaining:
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$x.Field1.Field2
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- The name of a key of the data, which must be a map, preceded
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by a period, such as
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.Key
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The result is the map element value indexed by the key.
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Key invocations may be chained and combined with fields to any
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depth:
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.Field1.Key1.Field2.Key2
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Although the key must be an alphanumeric identifier, unlike with
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field names they do not need to start with an upper case letter.
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Keys can also be evaluated on variables, including chaining:
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$x.key1.key2
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- The name of a niladic method of the data, preceded by a period,
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such as
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.Method
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The result is the value of invoking the method with dot as the
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receiver, dot.Method(). Such a method must have one return value (of
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any type) or two return values, the second of which is an error.
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@@ -200,16 +220,22 @@ An argument is a simple value, denoted by one of the following.
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and an error is returned to the caller as the value of Execute.
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Method invocations may be chained and combined with fields and keys
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to any depth:
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.Field1.Key1.Method1.Field2.Key2.Method2
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Methods can also be evaluated on variables, including chaining:
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$x.Method1.Field
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- The name of a niladic function, such as
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fun
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The result is the value of invoking the function, fun(). The return
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types and values behave as in methods. Functions and function
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names are described below.
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- A parenthesized instance of one the above, for grouping. The result
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may be accessed by a field or map key invocation.
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print (.F1 arg1) (.F2 arg2)
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(.StructValuedMethod "arg").Field
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