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Return true if the first value is greater or equal, or return false if the first value is less.Ĭheck whether an expression is true or false.
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Return true if the first value is more, or return false if less.Ĭomparison greater than or equal to. Return true if specified values are equal.Ĭomparison greater than. Return true if all specified expressions evaluate to true.Ĭomparison equal. Merges multiple JSON objects or items in an array together. Turn an array or object into an array of objects with index and value property.įlatten arrays into an array with non-array values.ĭetermines whether any elements of a sequence satisfy a condition.ĭetermine whether all elements of a sequence satisfy a condition. Sort elements in the collection in descending order and return the sorted collection. Sort elements in the collection in ascending order and return the sorted collection. Operate on each element and return the new collection of transformed elements.įilter on each element and return the new collection of filtered elements which match the specific condition. Return a subarray from specified start and end position. Return a collection that has only the common items across the specified collections. Return items from the front of a collection. Remove items from the front of a collection, and return the remaining items. Return a collection that has all the items from the specified collections. Operate on each element and return the new collection. Return the number of items in the collection. Return the last item from the collection. Return a string that has all the items from an array and has each character separated by a delimiter. Return the first item from the collection.
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Works to find an item in a string, to find an item in an array, or to find a parameter in a complex object. Reverse the order of the elements in a string or array. Return the starting position or index value of the last occurrence of a substring or search for the specified object and return the zero-based index of the last occurrence within the range of elements in the list.This function is case-insensitive, and indexes start with the number 0.Ĭapitalize the first letter of the first word in a string in an optional local format.Ĭapitalize the first letter of each word in a string in an optional locale format. This function is case-insensitive, and indexes start with the number 0. Return the starting position or index value of a substring or searches for the specified object and return the zero-based index of the first occurrence within the entire list. Return the number of words in the given string.Ĭombine two or more strings and return the resulting string. Return true if the substring is found, or return false if not found. This function is case-insensitive.Ĭheck whether a string starts with a specific substring. Return the ordinal number of the input number.Ĭheck whether a string ends with a specific substring. Remove leading and trailing white spaces from a string. Return a string in uppercase in an optional locale format. Return a string in lowercase in an optional locale format. Return an array that contains substrings based on the delimiter specified. Replace a substring with the specified string, and return the updated string. Replace a substring with the specified string and return the updated string. You can also view the list in alphabetical order. Prebuilt expressions are divided into the following function types: For information about operators used in prebuilt functions and expression syntax, see Operators. #import "AppDelegate.This article lists the available prebuilt functions ordered by their general purpose. The hashed message is case sensitive.ĭependent upon an open source js library called. They should all output qnR8UCqJggD55PohusaBNviGoOJ67HC6Btry4qXLVZc= given the values of secret and Message. See the stackOverflow question What is the use of base 64 encoding?īelow are some simplified HMAC SHA 256 solutions. Those signatures then needed to be converted to base64. Amazon S3 uses base64 strings for their hashes. There are some good reasons to use base64 encoding. The API required signing every REST request with HMAC SHA256 signatures. I recently went through the processing of creating SDKs for an in house API. Examples of creating base64 hashes using HMAC SHA256 in different languages