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'#!/usr/bin/env kal' Comment.Single
'\n' Text.Whitespace
'\n' Text.Whitespace
'# This demo executes GET requests in parallel and in series' Comment.Single
'\n' Text.Whitespace
'# using `for` loops and `wait for` statements.' Comment.Single
'\n' Text.Whitespace
'\n' Text.Whitespace
'# Notice how the serial GET requests always return in order' Comment.Single
'\n' Text.Whitespace
'# and take longer in total. Parallel requests come back in' Comment.Single
'\n' Text.Whitespace
'# order of receipt.' Comment.Single
'\n' Text.Whitespace
'\n' Text.Whitespace
'http' Name.Variable
' ' Text.Whitespace
'=' Operator
' ' Text.Whitespace
'require' Name.Variable
' ' Text.Whitespace
"'" Literal.String
'http' Literal.String
"'" Literal.String
'\n\n' Text.Whitespace
'urls' Name.Variable
' ' Text.Whitespace
'=' Operator
' ' Text.Whitespace
'[' Punctuation
"'" Literal.String
'http://www.google.com' Literal.String
"'" Literal.String
'\n ' Text.Whitespace
"'" Literal.String
'http://www.apple.com' Literal.String
"'" Literal.String
'\n ' Text.Whitespace
"'" Literal.String
'http://www.microsoft.com' Literal.String
"'" Literal.String
'\n ' Text.Whitespace
"'" Literal.String
'http://www.nodejs.org' Literal.String
"'" Literal.String
'\n ' Text.Whitespace
"'" Literal.String
'http://www.yahoo.com' Literal.String
"'" Literal.String
']' Punctuation
'\n\n' Text.Whitespace
'# This function does a GET request for each URL in series' Comment.Single
'\n' Text.Whitespace
'# It will wait for a response from each request before moving on' Comment.Single
'\n' Text.Whitespace
'# to the next request. Notice the output will be in the same order as the' Comment.Single
'\n' Text.Whitespace
'# urls variable every time regardless of response time.' Comment.Single
'\n' Text.Whitespace
'# It is a task rather than a function because it is called asynchronously' Comment.Single
'\n' Text.Whitespace
'# This allows us to use `return` to implicitly call back' Comment.Single
'\n' Text.Whitespace
'task' Keyword.Declaration
' ' Text.Whitespace
'series_demo' Name.Function
'(' Punctuation
')' Punctuation
'\n ' Text.Whitespace
'# The `series` keyword is optional here (for loops are serial by default)' Comment.Single
'\n' Text.Whitespace
' ' Text.Whitespace
'total_time' Name.Variable
' ' Text.Whitespace
'=' Operator
' ' Text.Whitespace
'0' Literal.Number.Integer
'\n\n ' Text.Whitespace
'for' Keyword
' ' Text.Whitespace
'series' Keyword
' ' Text.Whitespace
'url' Name.Variable
' ' Text.Whitespace
'in' Keyword
' ' Text.Whitespace
'urls' Name.Variable
'\n ' Text.Whitespace
'timer' Name.Variable
' ' Text.Whitespace
'=' Operator
' ' Text.Whitespace
'new' Keyword
' ' Text.Whitespace
'Date' Name.Builtin
'\n\n ' Text.Whitespace
'# we use the `safe` keyword because get is a "nonstandard" task' Comment.Single
'\n' Text.Whitespace
' ' Text.Whitespace
'# that does not call back with an error argument' Comment.Single
'\n' Text.Whitespace
' ' Text.Whitespace
'safe' Keyword
' ' Text.Whitespace
'wait' Keyword
' ' Text.Whitespace
'for' Keyword
' ' Text.Whitespace
'response' Name.Variable
' ' Text.Whitespace
'from' Keyword
' ' Text.Whitespace
'http.get' Name.Variable
' ' Text.Whitespace
'url' Name.Variable
'\n\n ' Text.Whitespace
'delay' Name.Variable
' ' Text.Whitespace
'=' Operator
' ' Text.Whitespace
'new' Keyword
' ' Text.Whitespace
'Date' Name.Builtin
'(' Punctuation
')' Punctuation
' ' Text.Whitespace
'-' Operator
' ' Text.Whitespace
'timer' Name.Variable
'\n ' Text.Whitespace
'total_time' Name.Variable
' ' Text.Whitespace
'+=' Operator
' ' Text.Whitespace
'delay' Name.Variable
'\n\n ' Text.Whitespace
'print' Name.Builtin
' ' Text.Whitespace
'"' Literal.String
'GET ' Literal.String
'#{' Literal.String.Interpol
'url' Name.Variable
'}' Literal.String.Interpol
' - ' Literal.String
'#{' Literal.String.Interpol
'response.statusCode' Name.Variable
'}' Literal.String.Interpol
' - ' Literal.String
'#{' Literal.String.Interpol
'response.connection.bytesRead' Name.Variable
'}' Literal.String.Interpol
' bytes - ' Literal.String
'#{' Literal.String.Interpol
'delay' Name.Variable
'}' Literal.String.Interpol
' ms' Literal.String
'"' Literal.String
'\n' Text.Whitespace
'\n ' Text.Whitespace
'# because we are in a task rather than a function, this actually exectutes a callback' Comment.Single
'\n' Text.Whitespace
' ' Text.Whitespace
'return' Keyword
' ' Text.Whitespace
'total_time' Name.Variable
'\n\n' Text.Whitespace
'# This function does a GET request for each URL in parallel' Comment.Single
'\n' Text.Whitespace
'# It will NOT wait for a response from each request before moving on' Comment.Single
'\n' Text.Whitespace
'# to the next request. Notice the output will be determined by the order in which' Comment.Single
'\n' Text.Whitespace
'# the requests complete!' Comment.Single
'\n' Text.Whitespace
'task' Keyword.Declaration
' ' Text.Whitespace
'parallel_demo' Name.Function
'(' Punctuation
')' Punctuation
'\n ' Text.Whitespace
'total_time' Name.Variable
' ' Text.Whitespace
'=' Operator
' ' Text.Whitespace
'0' Literal.Number.Integer
'\n\n ' Text.Whitespace
'# The `parallel` keyword is only meaningful here because the loop contains' Comment.Single
'\n' Text.Whitespace
' ' Text.Whitespace
'# a `wait for` statement (meaning callbacks are used)' Comment.Single
'\n' Text.Whitespace
' ' Text.Whitespace
'for' Keyword
' ' Text.Whitespace
'parallel' Keyword
' ' Text.Whitespace
'url' Name.Variable
' ' Text.Whitespace
'in' Keyword
' ' Text.Whitespace
'urls' Name.Variable
'\n ' Text.Whitespace
'timer' Name.Variable
' ' Text.Whitespace
'=' Operator
' ' Text.Whitespace
'new' Keyword
' ' Text.Whitespace
'Date' Name.Builtin
'\n\n ' Text.Whitespace
'# we use the `safe` keyword because get is a "nonstandard" task' Comment.Single
'\n' Text.Whitespace
' ' Text.Whitespace
'# that does not call back with an error argument' Comment.Single
'\n' Text.Whitespace
' ' Text.Whitespace
'safe' Keyword
' ' Text.Whitespace
'wait' Keyword
' ' Text.Whitespace
'for' Keyword
' ' Text.Whitespace
'response' Name.Variable
' ' Text.Whitespace
'from' Keyword
' ' Text.Whitespace
'http.get' Name.Variable
' ' Text.Whitespace
'url' Name.Variable
'\n\n ' Text.Whitespace
'delay' Name.Variable
' ' Text.Whitespace
'=' Operator
' ' Text.Whitespace
'new' Keyword
' ' Text.Whitespace
'Date' Name.Builtin
'(' Punctuation
')' Punctuation
' ' Text.Whitespace
'-' Operator
' ' Text.Whitespace
'timer' Name.Variable
'\n ' Text.Whitespace
'total_time' Name.Variable
' ' Text.Whitespace
'+=' Operator
' ' Text.Whitespace
'delay' Name.Variable
'\n\n ' Text.Whitespace
'print' Name.Builtin
' ' Text.Whitespace
'"' Literal.String
'GET ' Literal.String
'#{' Literal.String.Interpol
'url' Name.Variable
'}' Literal.String.Interpol
' - ' Literal.String
'#{' Literal.String.Interpol
'response.statusCode' Name.Variable
'}' Literal.String.Interpol
' - ' Literal.String
'#{' Literal.String.Interpol
'response.connection.bytesRead' Name.Variable
'}' Literal.String.Interpol
' bytes - ' Literal.String
'#{' Literal.String.Interpol
'delay' Name.Variable
'}' Literal.String.Interpol
'ms' Literal.String
'"' Literal.String
'\n' Text.Whitespace
'\n ' Text.Whitespace
'# because we are in a task rather than a function, this actually exectutes a callback' Comment.Single
'\n' Text.Whitespace
' ' Text.Whitespace
'return' Keyword
' ' Text.Whitespace
'total_time' Name.Variable
'\n\n' Text.Whitespace
'print' Name.Builtin
' ' Text.Whitespace
"'" Literal.String
'Series Requests...' Literal.String
"'" Literal.String
'\n' Text.Whitespace
'wait' Keyword
' ' Text.Whitespace
'for' Keyword
' ' Text.Whitespace
'time1' Name.Variable
' ' Text.Whitespace
'from' Keyword
' ' Text.Whitespace
'series_demo' Name.Variable
'(' Punctuation
')' Punctuation
'\n' Text.Whitespace
'print' Name.Builtin
' ' Text.Whitespace
'"' Literal.String
'Total duration ' Literal.String
'#{' Literal.String.Interpol
'time1' Name.Variable
'}' Literal.String.Interpol
'ms' Literal.String
'"' Literal.String
'\n\n' Text.Whitespace
'print' Name.Builtin
' ' Text.Whitespace
"'" Literal.String
"'" Literal.String
'\n\n' Text.Whitespace
'print' Name.Builtin
' ' Text.Whitespace
"'" Literal.String
'Parallel Requests...' Literal.String
"'" Literal.String
'\n' Text.Whitespace
'wait' Keyword
' ' Text.Whitespace
'for' Keyword
' ' Text.Whitespace
'time2' Name.Variable
' ' Text.Whitespace
'from' Keyword
' ' Text.Whitespace
'parallel_demo' Name.Variable
'(' Punctuation
')' Punctuation
'\n' Text.Whitespace
'print' Name.Builtin
' ' Text.Whitespace
'"' Literal.String
'Total duration ' Literal.String
'#{' Literal.String.Interpol
'time2' Name.Variable
'}' Literal.String.Interpol
'ms' Literal.String
'"' Literal.String
'\n' Text.Whitespace
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