[solve] How do I compare using strings?

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iagolira

  • solved. Thank you Ashley and dop2000

    I put the code if someone needs in the future.

    Paste directly as Function: 

    {"is-c3-clipboard-data":true,"type":"events","items":[{"functionName":"Compare","functionDescription":"","functionCategory":"","functionReturnType":"string","functionIsAsync":false,"functionParameters":[{"name":"source","type":"string","initialValue":"","comment":""}],"eventType":"function-block","conditions":[],"actions":[],"children":[{"eventType":"variable","name":"R","type":"string","initialValue":"(\\w+)\\s*?([<>!=]+)?\\s*?(\\d+|\\w+|[?<=\"].*?[?=\"]|[?<='].*?[?='])\\s*?","comment":"","isStatic":false,"isConstant":true},{"eventType":"variable","name":"operator","type":"string","initialValue":"","comment":"","isStatic":false,"isConstant":false},{"eventType":"variable","name":"operand1","type":"string","initialValue":"","comment":"","isStatic":false,"isConstant":false},{"eventType":"variable","name":"operand2","type":"string","initialValue":"","comment":"","isStatic":false,"isConstant":false},{"eventType":"variable","name":"Result","type":"number","initialValue":"-1","comment":"","isStatic":false,"isConstant":false},{"eventType":"block","conditions":[],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"operand1","value":"trim(RegexMatchAt(source, R, \"\", 1))"}},{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"operator","value":"trim(RegexMatchAt(source, R, \"\", 2))"}},{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"operand2","value":"trim(RegexMatchAt(source, R, \"\", 3))"}}],"children":[{"eventType":"comment","text":"Number"},{"eventType":"block","conditions":[{"id":"compare-two-values","objectClass":"System","parameters":{"first-value":"str(float(operand1))","comparison":0,"second-value":"operand1"}},{"id":"compare-two-values","objectClass":"System","parameters":{"first-value":"str(float(operand2))","comparison":0,"second-value":"operand2"}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"operand1","value":"float(operand1)"}},{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"operand2","value":"float(operand2)"}}],"children":[{"eventType":"block","conditions":[{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\">\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"float(operand1) > float(operand2)"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"<\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"float(operand1) < float(operand2)"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"=\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"float(operand1) = float(operand2)"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"==\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"float(operand1) = float(operand2)"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\">=\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"float(operand1) >= float(operand2)"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"<=\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"float(operand1) <= float(operand2)"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"!=\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"float(operand1) <> float(operand2)"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"<>\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"float(operand1) <> float(operand2)"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"-1"}}]}]},{"eventType":"comment","text":"String"},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"}],"actions":[],"children":[{"eventType":"block","conditions":[{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"=\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 = operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"==\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 = operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"!=\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 <> operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"<>\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 <> operand2"}}]}]}]},{"eventType":"block","conditions":[],"actions":[{"id":"set-function-return-value","objectClass":"Functions","parameters":{"value":"operand1 & \" \" & operator & \" \"& operand2 & \" // \" & (Result = 1 ? \"True\" : \"False\")"}}]}]}]}

    very simple to use. 

    Functions.compare("5>=10")

    -----

    -----

    history:

    I'm designing a dialog system, that include a syntax for conditional branching.

    If it all is a string, they are all correct 

    dictionary.Get("name") = "aaa"
dictionary.Get("layout") != "Level"

    But once they are numbers, they are compared in dictionary order. 

    "5" >= "10" // True. 5>1 (but is actually False)
"5"<="40" // False. 5<=4 (but is actually True)

    How do I distinguish between numbers and strings in a string?

    I originally thought of the system condition 'Is value type', but it didn't work the way I thought it would, because if a string is passed in, it still be a string.

    Here is a quick sample:

    cdn.discordapp.com/attachments/253490735268102144/974243238829490246/ask_how_to_compare_using_string.c3p

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  • Use the float(str) or int(str) system expressions to convert strings to numbers so you can compare them numerically.

  • If you know that these keys in the dictionary contain numbers, you need to convert them to integers before comparing. 

    int(dictionary.Get("gold"))>=int(dictionary.Get("price"))

    If you want to check if a string value contains a valid number, you can add an event like this: 

    If str(int(dictionary.Get("key"))) = dictionary.Get("key") : Set numVal to int(dictionary.Get("key")

  • I tried to use dop2000's means to compare whether they are numbers or strings, it does work. It correctly distinguishes between numeric and string types

    But they still compare with the wrong result.

    Clipboard: (Please see the case above for the full code, Here are just added 2 conditions: System: str(float(operand1)) = operand1) 

    {"is-c3-clipboard-data":true,"type":"events","items":[{"functionName":"Comparison","functionDescription":"","functionCategory":"","functionReturnType":"string","functionIsAsync":false,"functionParameters":[{"name":"source","type":"string","initialValue":"","comment":""}],"eventType":"function-block","conditions":[],"actions":[],"children":[{"eventType":"variable","name":"R","type":"string","initialValue":"(\\w+)\\s*?([<>!=]+)?\\s*?(\\d+|\\w+|[?<=\"].*?[?=\"]|[?<='].*?[?='])\\s*?","comment":"","isStatic":false,"isConstant":true},{"eventType":"variable","name":"operator","type":"string","initialValue":"","comment":"","isStatic":false,"isConstant":false},{"eventType":"variable","name":"operand1","type":"string","initialValue":"","comment":"","isStatic":false,"isConstant":false},{"eventType":"variable","name":"operand2","type":"string","initialValue":"","comment":"","isStatic":false,"isConstant":false},{"eventType":"variable","name":"Result","type":"number","initialValue":"-1","comment":"","isStatic":false,"isConstant":false},{"eventType":"block","conditions":[],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"operand1","value":"trim(RegexMatchAt(source, R, \"\", 1))"}},{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"operator","value":"trim(RegexMatchAt(source, R, \"\", 2))"}},{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"operand2","value":"trim(RegexMatchAt(source, R, \"\", 3))"}}],"children":[{"eventType":"comment","text":"Number"},{"eventType":"block","conditions":[{"id":"compare-two-values","objectClass":"System","parameters":{"first-value":"str(float(operand1))","comparison":0,"second-value":"operand1"}},{"id":"compare-two-values","objectClass":"System","parameters":{"first-value":"str(float(operand2))","comparison":0,"second-value":"operand2"}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"operand1","value":"float(operand1)"}},{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"operand2","value":"float(operand2)"}}],"children":[{"eventType":"block","conditions":[{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\">\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 > operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"<\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 < operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"=\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 = operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"==\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 = operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\">=\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 >= operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"<=\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 <= operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"!=\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 <> operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"<>\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 <> operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"-1"}}]}]},{"eventType":"comment","text":"String"},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"}],"actions":[],"children":[{"eventType":"block","conditions":[{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"=\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 = operand2"}}]},{"eventType":"block","conditions":[{"id":"else","objectClass":"System"},{"id":"compare-eventvar","objectClass":"System","parameters":{"variable":"operator","comparison":0,"value":"\"==\""}}],"actions":[{"id":"set-eventvar-value","objectClass":"System","parameters":{"variable":"Result","value":"operand1 = operand2"}}]}]}]},{"eventType":"block","conditions":[],"actions":[{"id":"set-function-return-value","objectClass":"Functions","parameters":{"value":"operand1 & \" \" & operator & \" \"& operand2 & \" // \" & (Result = 1 ? \"True\" : \"False\")"}}]}]}]}

  • Oh, I think I know what's going on. Because operand1 and operand2 are still variables of type String.

    I may have to use :

    Set Result to float(operand1) > float(operand2)

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