data-type - Related information

  • Questions about data types in golang?

    as shown in the figure, the this.Ctx.Input.Param ( ": pag ") in the beego framework clearly returns string, but why does the error prompt say int? add: Thank you for answering, because this is often written in js and php, and I don t think ther...

    Apr.05,2021
  • Why the length of the int4 type of postgresql can reach 10 bits

    two questions: Why the length of the int4 type of postgresql can reach 10 bits, but it is set to 32 bits in the attribute The int4 type length of postgresql is set to 32 bits by default, so why can t it be modified? it is still 32 bits after modif...

  • The string obtained by python input cannot be judged by is

    test = input( TT >> ).strip() print(type(test)) print(type( TT )) print(id(test)) print(id( TT )) if test is "TT": print( Yes ) after the above code runs, the result is TT >>TT <class str > <class str &...

    Mar.04,2021
  • MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
    MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bc9071-30932.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
    MySQL Errno : 1021
    Message : Disk full (/tmp/#sql-temptable-64f5-1bc9071-30932.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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