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  • Logical Operators

    287 2020-12-10 《Build your own Lisp》
    Logical Operators Logical Operators We didn’t define any local operators such as and and or in our language. This might be a good thing to add in later. For now we can use a...
  • ||

    || - Logical OR Operator || - Logical OR Operator An || (or) evaluates its left hand side. If it’s falsey, it evaluates its right hand side and has that value. Otherwise it has...
  • ||

    || - Logical OR Operator || - Logical OR Operator An || (or) evaluates its left hand side. If it’s falsey, it evaluates its right hand side and has that value. Otherwise it has...
  • &&

    && - Logical AND Operator && - Logical AND Operator An && (and) evaluates its left hand side. If it’s truthy, it evaluates its right hand side and has that value. Otherwise it ...
  • All for one

    All for one All for one Even though most people are assigned to a particular project, you can make use of anyone in the entire team for whatever you need. Don’t try to play the...
  • &&

    && - Logical AND Operator && - Logical AND Operator An && (and) evaluates its left hand side. If it’s truthy, it evaluates its right hand side and has that value. Otherwise it ...
  • ||

    || - Logical OR Operator || - Logical OR Operator An || (or) evaluates its left hand side. If it’s falsey, it evaluates its right hand side and has that value. Otherwise it has...
  • 生成类库映射文件

    生成类库映射文件optimize:autoload 生成类库映射文件optimize:autoload 可以使用下面的指令生成类库映射文件,提高系统自动加载的性能。 > php think optimize : autoload 指令执行成功后,会在runtime目录下面生成classmap.php 文件,生成的类库映射文件会扫描系统目录...
  • 08. decorators

    Exercise In Koa,all middleware are essentially decorators for all following middleware: app . use ( function * decorator ( function ( subapp ) { // do something before...