• Case analysis of priority and return status of tasks in gearman


    This paper describes the priority and return status of tasks in gearman. The details are as follows: Priority and return status of tasks in gearman 1、 Priority of tasks Block the call synchronously and wait for the result to be returned Dolow: lowest priority Donomal: normal priority Dohigh: top priority The asynchronous dispatch task does […]

  • Stack and queue (exercise class)


    An algorithm is designed to judge whether the brackets in the expression are paired. The (stack) data structure is the best. Parsing: judge each character in the expression in turn. If it is left bracket, it will enter the stack. If it is right bracket, it will exit the stack. When leaving the stack, judge […]

  • Two ways to understand CSS priority


    Method 1: value addition   Let’s go to MDN first to see the official explanation: How is the priority calculated? Priority is a weight assigned to the specified CSS declaration, which is determined by the value of each selector type in the matched selector. When the priority is equal to the priority of any one […]

  • Invalid solution when defining multiple class attributes in HTML


    In the process of writing HTML, we often define multiple values for the class attribute, but we often find that the values defined by ourselves are invalid!!! In the past, I directly rewritten this situation, or directly set the CSS property with ID. today, it seems that there is something wrong… I have to find […]

  • An introduction to Ruby’s operators and statement priorities


    Ruby is a very expressive language, which is proud of its extremely rich operators and syntax sugar. Although ruby has always regarded the principle of least surprise as one of its philosophies, it still often sees surprising and hard to understand code, which may be caused by the incomprehension of its operators and statement priorities. […]