Do-public-welfare | Style Language library
kandi X-RAY | Do-public-welfare Summary
kandi X-RAY | Do-public-welfare Summary
本次项目围绕着公益主题进行设计与制作,主要实现了做公益首页、行动者联盟、留言板等页面。通过采用DIV+CSS3+JavaScript进行样式布局排版,使用JQuery完成页面动态效果部分。前端与后台的交互使用Ajax进行异步请求,PHP对数据进行增删改查处理,用phpMyAdmin数据库管理工具通过 Web方式控制和操作 MySql数据库。
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Trending Discussions on Style Language
QUESTION
I'm trying to write a Haskell-style language parser in ANTLR4, but I'm having some issues with function application. It parses as right associative rather than left associative
...ANSWER
Answered 2021-Dec-09 at 13:59As @sepp2k pointed out, | expression expression
will correct your issue.
ANTLR defaults to left associativity., but you were overriding that with the (expression)+
in trying to gather all the expressions.
Of course, this will give you a parse tree of (expr (expr (expr f) (expr "a")) (expr "b"))
but this is probably more in keeping with a Haskell approach to function application than just a list of expressions.
BTW, precedence only comes into play when operators are involved. Having StringLiteral
before LSquareParen
his no effect on precedence since there's no ambiguity in determining the correct parse tree to derive. You may find that your OperatorApplicationExpresion
alternative gives "surprising" results as it will evaluate all operators left-to-right, so a + b * c
will be evaluated as "(a + b) * c" and this violates arithmetic norms (maybe it's what you want however).
QUESTION
I keep receiving an error/lint which reads Variable 'self.item' used before being initialized
. This message only appears when I seemingly add a @State
of type Date
(see commented line below).
Variable item
is a CoreData
value that I'm attempting to update through a form. All of the other required data types (int, string, data, etc.) all work as expected.
I'm fairly confident that this is an issue which stems from my lack of experience with Swift or declarative-style languages in general, but I'm also wary that it could be a compiler issue as I seem to run into a few of those as well.
...ANSWER
Answered 2021-Jul-30 at 14:13Just do the following:
QUESTION
I want to use language="sass"
in my Vue 2 CLI project's components, but it throws me and error when using SASS syntax:
ANSWER
Answered 2020-May-18 at 08:11If anyone is interested, I repeated the same steps in my vue utils file, and it solved the problem
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