Operator - Related information

• In the php statement, what is the operator?

  as mentioned above, you can see the following line in the code: return $teacher_name ?: ---- ; What is the name of this operator, please? What does it mean? ...

  Operator php7 php

  Jul.23,2021
• What are the general uses of bit operators?

  What are the general uses of the bit operator? For example, to solve a problem, it is very simple to use the bit operator. ...

  Bit operator

  Mar.29,2021
• A > = b is to judge whether an is equal to b or whether an is greater than b first?

  in other words, a > = b equals astatb | | a > b or a > b | | astatableb? ...

  Operator determines-the-principle-of computer

  Mar.14,2021
• What happens in JAVA about using = = and println

  Integer a = 1; Integer b = 2; Long c = 3L; c = a compiler error will result in the error that int cannot be converted to long System.out.println (compiled normally, resulting in true Why? I know that when int and long add up, they both turn i...

  Java integer operator

  Mar.12,2021
• $str1 = "01" cumulative problem

  found a very interesting phenomenon in PHP, but I don t know how to explain it. The code goes like this: $str1 = "01 "; $str1PP; echo $str1; 01 $str1 = "01"; $str1PP; echo $str1; 2 Why is it interesting ...

  Php operator

  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-64f5-1bf3dce-31702.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf3dce-31702.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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