how to convert octal to binary manually

In JS, in general, the data types are divided into two categories, one is the original value type, and the other is the reference type. The original value types include: string , Numeric (number) , boolean (Boolean) , and two special values null

PHP type overview PHP supports eight original data types Four scalar types: Boolean (boolean) integer (integer) float (float type, also known as double) string (string) Two composite types: Array (array) object (object) There are two special

When constructing various types of data into strings, the powerful features of sprintf seldom disappoint you. Since sprintf and printf have almost the same usage, but the printing destination is different, the former is printed into the string, and

Learning Perl 4ed Reading Notes Chapter2 scalar data1. Numbers. All data (INT, float) is of the double type in Perl. Of course, sometimes Perl also uses integer to represent int internally, because this can improve the running speed of the program,

When constructing various types of data into strings, the powerful features of sprintf seldom disappoint you. Since sprintf and printf have almost the same usage, but the printing destination is different, the former is printed into the string, and

Java packaging and Java Packaging 1. What is a Java packaging class? The so-called Java packaging class is to package the eight basic data types in Java into classes. The following table lists the mappings between packages and basic data types.

JavaScript data type conversion principle (dry goods), javascript Data Type We all know that JavaScript is a weak (or dynamic) language, that is, the type of the variable is uncertain. var num = 123 ; //123var num = 'HAHAHA' + num ; //

Overview PHP supports 8 types of raw data Four types of scalar: Boolean (Boolean) integer (integer) float (floating-point, also called Double) string (string) Two kinds of composite types: Array (Array) object (object) Finally, there are two

In JS, data types are generally divided into two categories: Original Value Type and reference type. The original value types include:String),Number),Boolean)And two special values.NullAndUndefined. The reference type mainly refers to the object. In

(1) Basic Data type IntroductionJavaScript data types fall into two categories: primitive type (primitive type) and object typeOr, you can have a type of method and a type that cannot have a methodOr, variable (mutable) type and immutable (immutable)