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Dictionary/Object LibraryThis Library is aimed to mitigate the limitation of Pinescript having only one structured data type which is only arrays. It lacks data types like Dictionaries(in Python) or Object (in JS) that are standard for other languages. Tuples do exist, but it hardly solves any problem. Working only with Arrays could be overwhelming if your codebase is large. I looked for alternatives to arrays but couldn't find any library. So I coded it myself and it's been working good for me. So I wanted to share it with you all. What does it do: ================== If you are familiar with Python or Javascript, this library tries to immimate Object/Dictonary like structure with Key Value Pairs. For Example: object= {name:"John Doe", age: 28 , org: "PineCoders"} And then it also tries to immitate the Array of Objects (I call it Stack) like this: stack= Array({name:"John Doe", age: 28 , org: "PineCoders"}, {name:"Adam Smith", age: 32 , org: "PineCoders"}, {name:"Paragjyoti Deka", age: 25 , org: "PineCoders"}) So there are basically two ideas: Objects and Stacks. But it looks whole different in Pinescript for obvious reasons. Limitation: The major limitation I couldn't overcome was that, for all of the values: both input and return values for properties will be of string type. This is due to the limiation of Pinecsript that there is no way to return a value on a if-else statement dynamically with different data types. And as the input data type must be explicitly defined when exporting the library functions, only string inputs are allowed. Now that doesn't mean you won't be able to use integer, float or boolens, you just need to pass the string value for it using str.tostring() method. And the output for the getter functions will be in strings as well. But I have added some type conversion methods that you could use from this library itself. From String to Float, String To Integer and String to Boolean: these three methods are included in this library. So basically the whole library is based on a manipulatiion of Array of strings under the hood. /////////////// Usage /////////////// Import the library using this statement: import paragjyoti2012/STR_Dict_Lib/4 as DictLib Objects First define an object using this method: for eample: object1= DictLib.init("name=John,age=26,org=") This is similar to object1= {name:"John",age:"26", org:""} in JS or Python Just like we did here in for "org", you can set initital value to "". But remember to pass string values, even for a numerical properties, like here in "age". You can use "age="+str.tostring(age). If you find it tedious, you can always add properties later on using .set() method. So it could also be initiated like this object= DictLib.init("name=John") and later on DictLib.set(object1,"age", str.toString(age)) DictLib.set(object1,"org", "PineCoders") The getter function looks like this age= DictLib.get(object1,"age") name=DictLib.get(object1,"name") The first argument for all methods .get, .set, and .remove is the pointer (name of the object). /////////////////////////// Array Of Objects (Stacks) /////////////////////////// As I mentioned earlier, I call the array of objects as Stack. Here's how to initialize a Stack. stack= DictLib.initStack(object1) The .initStack() method takes an object pointer as argument. It simply converts the array into a string and pushes it into the newly created stack. Rest of all the methods for Stacks, takes the stack pointer as it's first arument. For example: DictLib.pushStack(stack,object2) The second argument here is the object pointer. It adds the object to it's stack. Although it might feel like a two dimentional array, it's actually an one dimentional array with string values. Under the hood, it looks like this //////////////////// Methods //////////////////// For Objects ------------------- init() : Initializes the object. params: (string) e.g returns: The object ( ) example: object1=DictLib.init("name=John,age=26,org=") ................... get() : Returns the value for given property params: (string object_pointer, string property) returns: string example: age= DictLib.get(object1,"age") ....................... set() : Adds a new property or updates an existing property params: (string object_pointer, string property, string value) returns: void example: DictLib.set(object1,"age", str.tostring(29)) ........................ remove() : Removes a property from the object params : (string object_pointer, string property) returns: void example: DictLib.set(object1,"org") ........................ For Array Of Objects (Stacks) ------------------------------- initStack() : Initializes the stack. params: (string object_pointer) e.g returns: The Stack example: stack= DictLib.initStack(object1) ................... pushToStack() : Adds an object at at last index of the stack params: (string stack_pointer, string object_pointer) returns: void example: DictLib.pushToStack(stack,object2) ....................... popFromStack() : Removes the last object from the stack params: (string stack_pointer) returns: void example: DictLib.popFromStack(stack) ....................... insertToStack() : Adds an object at at the given index of the stack params: (string stack_pointer, string object_pointer, int index) returns: void example: DictLib.insertToStack(stack,object3,1) ....................... removeFromStack() : Removes the object from the given index of the stack params: (string stack_pointer, int index) returns: void example: DictLib.removeFromStack(stack,2) ....................... getElement () : Returns the value for given property from an object in the stack (index must be given) params: (string stack_pointer, int index, string property) returns: string example: ageFromObject1= DictLib.getElement(stack,0,"age") ....................... setElement() : Updates an existing property of an object in the stack (index must be given) params: (string stack_pointer, int index, string property, string value) returns: void example: DictLib.setElement(stack,0,"age", str.tostring(32)) ........................ includesElement() : Checks if any object exists in the stack with the given property-value pair params : (string stack_pointer, string property, string value) returns : Boolean example: doesExist= DictLib.includesElement(stack,"org","PineCoders") ........................ searchStack() : Search for a property-value pair in the stack and returns it's index params: (stringp stack_pointer, string property, string value) returns: int (-1 if doesn't exist) example: index= DictLib.searchElement(stack,"org","PineCoders") /////////////////////// Type Conversion Methods /////////////////////// strToFloat() : Converts String value to Float params: (string value) returns: float example: floatVal= DictLib.strToFloat("57.96") ............................. strToInt() : Converts String value to Integer params: (string value) returns: int example: intVal= DictLib.strToFloat("45") ............................. strToBool() : Converts String value to Boolean params: (string value) returns: boolean example: boolVal= DictLib.strToBool("true") ............................. Points to remember ............... 1. Always pass string values as arguments. 2. The return values will be of type string, so convert them before to avoid typecasting conflict. 3. Horses can't vomit. More Informations ==================== Yes, You can store this objects and stacks for persisting through the iterations of a script across successive bars. You just need to set the variable using "var" keyword. Remember this objects and stacks are just arrays, so any methods and properties an array have it pinescript, would be applicable for objects and stacks. It can also be used in security functions without any issues for MTF Analysis. If you have any suggestions or feedback, please comment on the thread, I would surely be happy to help.
Pine Script® library
by CyberMensch
20
ConverterTFLibrary "ConverterTF" I have found a bug Regarding the timeframe display, on the chart I have found that the display is numeric, for example 4Hr timeframe instead of '4H', but it turns out to be '240', which I want it to be displayed in abbreviated form. And in all other timeframes it's the same. So this library was created to solve those problems. It converts a timeframe from a numeric string type to an integer type by selecting a timeframe manually and displaying it on the chart. CTF() str = "240" X.GetTF( str ) Example str = input.timeframe(title='Time frame', defval='240') TimeF = CTF(str) L=label.new(bar_index, high, 'Before>> Timeframe '+str+' After>> Timeframe '+TimeF,style=label.style_label_down,size=size.large) label.delete(L ) Custom timeframes can handle this issue as well. An example from the use. You will find it on the bottom right hand side. Hopefully it will be helpful to the Tradingview community. :)
Pine Script® library
by hapharmonic
Signal_Data_2021_09_09__2021_11_18Library "Signal_Data_2021_09_09__2021_11_18" Functions to support my timing signals system import_start_time(harmonic) get the start time for each harmonic signal   Parameters:      harmonic : is an integer identifying the harmonic   Returns: the starting timestamp of the harmonic data import_signal(index, harmonic) access point for pre-processed data imported here by copy paste   Parameters:      index : is the current data index, use 0 to initialize      harmonic : is the data set to index, use 0 to initialize   Returns: the data from the indicated harmonic array starting at index, and the starting timestamp of that data
Pine Script® library
by ubiquity
DiscordWebhookFunctionLibrary "DiscordWebhookFunction" discordMarkdown(_str, _italic, _bold, _code, _strike, _under) Convert string to markdown formatting User can combine any function at the same time.   Parameters:      _str : String input      _italic : Italic      _bold : Bold      _code : Code markdown      _strike : Strikethrough      _under : Underline   Returns: string Markdown formatted string. discordWebhookJSON(_username, _avatarImgUrl, _contentText, _bodyTitle, _descText, _bodyUrl, _embedCol, _timestamp, _authorName, _authorUrl, _authorIconUrl, _footerText, _footerIconUrl, _thumbImgUrl, _imageUrl) Convert data to JSON format for Discord Webhook Integration.   Parameters:      _username : Override bot (webhook) username string / name,      _avatarImgUrl : Override bot (webhook) avatar by image URL,      _contentText : Main content page message,      _bodyTitle : Custom Webhook's embed message body title,      _descText : Webhook's embed message body description,      _bodyUrl : Webhook's embed body direct link URL,      _embedCol : Webhook's embed color,      _timestamp : Timestamp,      _authorName : Webhook's embed author name / title,      _authorUrl : Webhook's embed author direct link URL,      _authorIconUrl : Webhook's embed author icon by image URL,      _footerText : Webhook's embed footer text / title,      _footerIconUrl : Webhook's embed footer icon by image URL,      _thumbImgUrl : Webhook's embed thumbnail image URL,      _imageUrl : Webhook's embed body image URL.   Returns: string Single-line JSON format
Pine Script® library
by wlhm
25
FunctionArrayReduceLibrary "FunctionArrayReduce" A limited method to reduce a array using a mathematical formula. float_(formula, samples, arguments, initial_value) Method to reduce a array using a mathematical formula.   Parameters:      formula : string, the mathematical formula, accepts some default name codes (index, output, previous, current, integer index of arguments array).      samples : float array, the data to process.      arguments : float array, the extra arguments of the formula.      initial_value : float, default=0, a initial base value for the process.   Returns: float. Notes: ** if initial value is specified as "na" it will default to the first element of samples.
Pine Script® library
by RicardoSantos
smfLibrary "smf" f_strLeft(string, int) Function returning the leftmost `_n` characters in `_str`.   Parameters:      string : _str: source string.      int : _n : number of leftmost characters to return. f_strRight(string, int) Function returning the rightmost `_n` characters in `_str`.   Parameters:      string : _str: source string.      int : _n : number of rightmost characters to return. f_strMid(string, int, int) Function returning the substring of `_str` from character position `_from` to `_to` inclusively.   Parameters:      string : _str : source string.      int : _from: left character position. The first character's position is 0.      int : _to : right character position. f_strLeftOf(string, string) Function returning the sub-string of `_str` to the left of the `_of` separating character.   Parameters:      string : _str: string to separate.      string : _op : separator character. f_strRightOf(string, string) Function returning the sub-string of `_str` to the right of the `_of` separating character.   Parameters:      string : _str: string to separate.      string : _op : separator character. f_strCharPos(string, string) Function returning the position of the first occurrence of `_chr` in `_str`, where the first character position is 0. Returns -1 if the character is not found.   Parameters:      string : _str: string to search.      string : _chr: character to search for in `_str`. f_strReplace(string, int, string) Function that replaces a character at position `_pos` in the `_src` string with the `_str` character or string.   Parameters:      string : _src : source string.      int : _pos : position of character to be replaced. The first character's position is 0.      string : _str : replacement character or string. f_tickFormat() Function returning a format string usable with `tostring()` to round a value to the symbol's tick precision. f_tostringPad(float, string) Function returning a string representation of a numeric `_val` using a special `_fmt` string allowing all strings to be of the same width, to help align columns of values.   Parameters:      float : _val: string to separate.      string : _fmt: formatting string similar to those used in the `tostring()` format string, with "?" used to indicate padding, f_print() Function prints a label on dataset's last bar.
Pine Script® library
by GETpacman
StringEvaluationLibrary "StringEvaluation" Methods to handle evaluation of strings. is_comma(char) Check if char is a comma ".". Parameters: char : string, 1 character string. Returns: bool. is_op(char) Check if char is a operator. Parameters: char : string, 1 character string. Returns: bool. number(char) convert a single char string into valid number. Parameters: char : string, 1 character string. Returns: float. operator(op, left, right) operation between left and right values. Parameters: op : string, operator string character. left : float, left value of operation. right : float, right value of operation. operator_precedence(op) level of precedence of operator. Parameters: op : string, operator 1 char string. Returns: int. cleanup(_str) Evaluate a string to clean up and retrieve only used chars Parameters: _str : string, arithmetic operations in a string. Returns: string array, evaluated array. generate_rpn(tokens) uses Shunting-Yard algorithm to generate a RPN (Reverse Polish notation) array of strings from a array of strings containing arithmetic notation. ex:.. ' ' --> ' ' Parameters: tokens : string array, array with arithmetic notation. Returns: parse_rpn() evaluate a RPN (Reverse Polish notation) array of strings. ex:.. 3 4 2 * 1 5 - 2 3 ^ ^ / + | @param tokens string array, RPN ordered tokens, ex( ). | @returns float, solution. eval() evaluate a string with references to a array of arguments. | @param tokens string, arithmetic operations with references to indices in arguments, ex:"0+1*0+2*2+3" arguments | @param arguments float array, arguments. | @returns float, solution.
Pine Script® library
by RicardoSantos
2