What is the difference between = (single equal to) and == (double equal to)?

What is the difference between = (single equal to) and == (double equal to)?

  • The = (single equal to) is use to assign the value on the right to a variable
    on the left.

  • The == (double equal to) is use to compare to two values.

Explained By DDSRY

#difference between #singe equal to #double equal to #python #programming #developer

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What is the difference between = (single equal to) and == (double equal to)?

What is the difference between = (single equal to) and == (double equal to)?

What is the difference between = (single equal to) and == (double equal to)?

  • The = (single equal to) is use to assign the value on the right to a variable
    on the left.

  • The == (double equal to) is use to compare to two values.

Explained By DDSRY

#difference between #singe equal to #double equal to #python #programming #developer

Joseph  Murray

Joseph Murray

1624097700

Double comparison in Java

Recently I was solving an interesting bug that came down to comparing two Double variables with equals method. It looks innocent, what can be wrong with something like firstDouble.equals(secondDouble)?

The problem here is with how doubles are stored. To fit them into 64bytes (usually) they are rounded.

See the example below:

Double firstDouble = 0d;
for (int i = 1; i <= 42; i++) {
 firstDouble += 0.1;
}
Double secondDouble = 0.1 * 42;
System.out.println(firstDouble); // 4.200000000000001
System.out.println(secondDouble); // 4.2
System.out.println(firstDouble.equals(secondDouble)); // false

This inaccuracy is caused by rounding errors.

We need to use a different approach to compare those doubles.

#java #double comparison in java #double comparison #comparisons #double

Macey  Legros

Macey Legros

1599641040

Java String Equals Example | String equals() In Java

In Java, objects of strings are immutable, so that means we cannot once the string is created. Now, if we have two strings and we want to compare them if they are the same or not, then we can use the equals()method.

Java String Equals Example

Java String equals() method compares the two given strings based on the content of a string.

If any character is not matched, then it returns false and if all characters are matched, it returns true.

  1. Java String equals() method overrides an Object class equals() method implementation.
  2. Java String is immutable, checking the equality of string to another object should be done using equals() method rather than == operator.
  3. String equals() method always returns a boolean value; it doesn’t throw any exceptions.
  4. The result of the equals() method is true if and only if an argument is not null, it’s the String object, represents the same sequence of characters as this string.

See the following syntax.

string1.equals(string2);

#java #java string equals #equals

Paresh Sagar

1581940975

What Is A Single-Page Application?

Single page web apps are an ideal choice when thinking about future web development. This architecture is a perfect choice for social networks stuff, SaaS platforms, or some close communities where SEO doesn’t matter.

#what is a single page application #single page application #single page application development

Malvina  O'Hara

Malvina O'Hara

1598729340

Python String Equals Example | Python String Comparison

Python String comparison can be performed using equal (==) and comparison (<, >, !=, <=, >=) operators. There are no particular functions to compare two strings in Python. Strings in python are contiguous series of characters delimited by single or double-quotes. Python doesn’t have any separate data type for characters, so they are represented as a single character string.

Python String Equals

The equal operator is used to compare two strings. It compares one by one character of both strings. When different characters are found in string, then their Unicode value is compared. In Python, the character with lower Unicode value is considered to be smaller and higher unicode value considered to be higher.

#python #equals #python string equals