freemarker has_content
Well that didn't take long. Apparently, Freemarker can work with either camel-case or "_" versions of the builtin names. Thus, ?hasContent ...,This built-in evaluates a string as an FTL expression. ... when in doubt you can use always use expr!?size > 0 or expr!?length > 0 instead of expr?has_content.
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 freemarker has_content 相關參考資料
Difference between ?? , has_content , if_exists in freemarker ...
?? tells if the left hand operand's value is missing (means it's Java null or you have an undefined variable there), and gives back false (missing) or true (not ... https://stackoverflow.com Freemarker "has_content" builtin causing unexpected error - Stack ...
Well that didn't take long. Apparently, Freemarker can work with either camel-case or "_" versions of the builtin names. Thus, ?hasContent ... https://stackoverflow.com FreeMarker Manual - Seldom used and expert built-ins - Huihoo
This built-in evaluates a string as an FTL expression. ... when in doubt you can use always use expr!?size > 0 or expr!?length > 0 instead of expr?has_content. https://docs.huihoo.com freemarker中ftl語言中??、?has_content、！、?if_exists的區別
最近在專案中，出現了一個bug，一開始用的??來判斷是否為空，但是報錯了，改成?has_content就沒錯了。 ?? tells if the left hand operand's value ... https://www.itread01.com freemarker中ftl语言中??、?has_content、！、?if_exists ... - CSDN
?has_content is very much like ??, except it also returns false for an empty string or empty list or empty map. (It doesn't return false for a 0, ... https://blog.csdn.net How can I check null and empty both in freemarker string? - Stack ...
str?has_content returns true if str is non- null (non-missing), and is also not a 0-length string. So you just need <#if str?has_content> . https://stackoverflow.com How to check if a variable exists in a FreeMarker template ...
Or with the standard freemarker syntax: <#if userName??> ... <#if userName?has_content> Hi $userName}, How are you? </#if>. https://stackoverflow.com Seldom used and expert built-ins - Apache FreeMarker Manual
跳到 has_content - has_content. It is true if the variable exists (and isn't Java null ) and is not "empty", otherwise it is false . The meaning of "empty" ... https://freemarker.apache.org |