num 1

[[email protected] shell-test]# chmod a+x para.sh [[email protected] shell-test]# lltotal 44-rw-r--r--1 root R Oot 0 Jul 00:52 012-rw-r--r--1 root root 201 Jul 19:04 2-rw-r--r--1 root root 0 Jul 00:45 abc-rwxr-xr-x 1 root root 149 Jul 03:24 echotest1

Thinkphp why I don't have num =-1. when I click the minus sign button, I will subtract 1: thinkphp does not have num =-1. when I click the minus sign button, it will be reduced by 1. Share: More

Syntax sugar, equivalent to if (!! num = = false) Num=1; Java-like num=null? 1:numThe following is an answer from a friend who knows:It's just a shorthand method. The advantage is shorter, but in fact the disadvantage is even greater.Do you know

The static keyword declares that a property or method is related to a class and not to a particular instance of a class, so such a property or method is also referred to as a class property or class method. If the access Control permission allows,

The static keyword declares that a property or method is related to a class and not to a particular instance of a class, so such a property or method is also referred to as a class property or class method. If the access Control permission allows,

The static keyword declares that a property or method is related to a class and not to a particular instance of a class, so such a property or method is also referred to as a class property or class method.If the access Control permission allows,

After the interface is drawn, the number of thunder is also arranged, the next is the game running process, today, not to say the specific process, then to see the need to use the auxiliary function First, a simple red flag, the right mouse button

The static keyword declares that a property or method is related to a class, not a particular instance of a class, and therefore such a property or method is also called a class property or a class method. If access control permission allows, you

The static keyword declares that a property or method is related to a class, not a particular instance of a class, and therefore such a property or method is also called a class property or a class method. If access control permission allows, you

=The relationship between the key and value used for an array in an arrayFor example:$a = Array (' 0 ' = ' 1 ',' 2 ' = ' 4 ',);echo $a [' 0 '];echo $a [' 2 ']; -Methods and properties in a class to reference class instancesFor example:Class

The static keyword is used to decorate properties, methods, and to describe these properties, methods as static properties, and static methods. The static keyword declares that a property or method is related to a class, not to a particular instance

=The relationship between the key and value used for an array in an arrayFor example:$a = Array (' 0 ' = ' 1 ',' 2 ' = ' 4 ',);echo $a [' 0 '];echo $a [' 2 '];-Methods and properties in a class to reference class instancesFor example:Class

=The relationship between the key and value used for an array in an arrayFor example:$a = Array (' 0 ' = ' 1 ',' 2 ' = ' 4 ',);echo $a [' 0 '];echo $a [' 2 '];-Methods and properties in a class to reference class instancesFor example:Class

Simple Factory mode: ① abstract base class: class definition abstract Some methods to implement in subclasses② inherits from the abstract base class: Implementing an abstract method in a base class③ Factory class: Used to instantiate objects

Simple Factory mode: ① abstract base class: Some methods of defining abstractions in classes to implement in subclasses ② inherits from the subclass of the abstract base class: Implementing an abstract method in a base class ③ Factory class: Used to

PHP Simple Factory Model Example explained, a simple explanation of the people can refer to a bit. Simple Factory mode:① abstract base class: Some methods of defining abstractions in classes to implement in subclasses② inherits from the subclass of

Simple Factory mode: ① abstract base class: class definition abstract Some methods to implement in subclasses② inherits from the abstract base class: Implementing an abstract method in a base class③ Factory class: Used to instantiate objects What

Simple Factory mode:① abstract base class: class definition abstract Some methods to implement in subclasses② inherits from the abstract base class: Implementing an abstract method in a base class③ Factory class: Used to instantiate objects Read

Simple Factory mode: ① abstract base class: class definition abstract Some methods to implement in subclasses ② inherits from the abstract base class: Implementing an abstract method in a base class ③ Factory class: Used to instantiate objects Read

A deck of cards to send five cards to you: let you judge the composition of the number:There are several situations:1: Four: Four cards of the same value (regardless of the color of the card)2: Three bands with one pair3: Three cards with two