# Collection Extensions ### Overview In **EasyValidation,** you can not only [perform multiple validations](https://wajahatkarim.gitbook.io/easyvalidation/usage/multiple-validation-checks) on same text, but you can also perform same validation on multiple text streams at same time by using [Collection Extensions](/easyvalidation/usage/collection-extensions.md#list-of-collection-extensions). For example, you are taking a guest invite list of email addresses, and you have to see that all the texts are valid email addresses. Then you can do it like this: ```kotlin var emailList = listOf("email1@domain.com", "email2@dom.com", "em3@ga.com") // You can pass any collection via spread operator var allValid = validEmailList(*emailList, { str, msg -> // The str is an invalid text. The msg contains the message here. }) // Or you can pass any number of arguments directly var allValid2 = validEmailList("em@gma.com", "te@st.com", "23ss@", { str, msg -> // The str is the invalid text. The msg contains the message here. }) ``` ### List of Collection Extensions The Collection extension methods' names are same as the [extension methods](/easyvalidation/usage/validation-using-extension-methods.md#list-of-extension-methods) names followed by `List` keyword. For example, `validEmail()` becomes `validEmailList()` and so on. These methods accept `varargs` parameter for multiple texts and an error callback method. Here's list of all the collection extension methods. | Method | Description | | ----------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `nonEmptyList()` | Returns `true` if the text is not empty. And returns `false` if text is empty. | | `minLengthList()` | Returns `false` if the length of text is less than given minimum length. | | `maxLengthList()` | Returns `false` if text length is greater than given length | | `validEmailList()` | Returns `true` if text is a valid email address. | | `validNumberList()` | Returns `true` if the text is any valid number | | `greaterThanList()` | Returns `false` if the text is number less than the given target number | | `greaterThanOrEqualList()` | Returns `false` if the text is number less than or equal to the given target number | | `lessThanList()` | Returns `false` if the text is number greater than the given target number | | `lessThanOrEqaulList()` | Returns `false` if the text is number greater than or equal to the given target number | | `numberEqualToList()` | Returns `false` if the text is a valid number and equal to the given target number | | `allUperCaseList()` | Returns `false` if at least one or more characters are lower case | | `allLowerCaseList()` | Returns `false` if at least one or more characters are upper case | | `atleastOneUperCaseList()` | Returns `true` if at least one or more characters are upper case | | `atleastOneLowerCaseList()` | Returns `true` if at least one or more characters are lower case | | `atleastOneNumberList()` | Returns `true` if at least one or more characters are numbers | | `startWithNumberList()` | Returns `true` if text starts with any number | | `startWithNonNumberList()` | Returns `false` if text starts with any number | | `noNumbersList()` | Returns `false` if the text any number or digit. | | `onlyNumbersList()` | Returns `false` if text contains any alphabetic character | | `noSpecialCharactersList()` | Returns `true` if text contain no special characters | | `atleastOneSpecialCharactersList()` | Returns `true` if text contain at least one special characters | | `textEqaulToList()` | Returns `false` if the text is not equal to the given text | | `textNotEqualToList()` | Returns `true` if the text is not equal to the given text | | `startsWithList()` | Returns `true` if the text starts with the given text | | `endsWithList()` | Returns `true` if the text ends with the given text | | `containsList()` | Returns `true` if the text contains the given text | | `notContainsList()` | Returns `false` if the text contains the given text | | `creditCardNumberList()` | Returns `true` if the text is valid credit card number. This supports Visa, Master Card, American Express, Diners Club, Discover, and JCB. | | `creditCardNumberWithSpacesList()` | Returns `true` if the text is valid credit card number with spaces between 4 characters. This supports Visa, Master Card, American Express, Diners Club, Discover and JCB. | | `creditCardNumberWithDashesList()` | Returns `true` if the text is valid credit card number with dashes between 4 characters. This supports Visa, Master Card, American Express, Diners Club, Discover, and JCB. | | `validUrlList()` | Returns `true` if the text is a valid URL | | `regexList()` | Returns `true` if the text matches passed `RegEx` pattern. | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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