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In programming languages, the equals sign may either denote a boolean operator to test equality of values (sometimes a double equal sign "=="), or it may denote an assignment (sometimes denoted with a colon-equals ":="). In some programming languages such as PHP a double equals sign ("==") denotes equivalence, meaning that the variables may not be of the same data type, but their values can be reduced to the same value. The triple equal sign ("===") denotes identity, meaning that not only do the two values parse to be the same, they are of the same data type. For instance, in PHP the expression ("0 false") is not, because the number 0 is an integer value, whereas false is a Boolean.

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Q: What is the use of the double equal sign?
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Does everyone use algebra?

YES!! You use algebra in your everyday lives. Adding is considered an equation. An equation is a problem with an equal sign. An expression has no answer (an equal sign).


You use this symbol in an equation to indicate a sum?

An equal sign


What does 8 minus negative 3 equal?

8 minus negative three or 8--3 equal positive 11. The double negative converts the minus sign into a plus sign and the negative into a positive.


Is at least algebra symbol?

At least means "greater than or equal to". In this browser it can be written as >=, but if you were writing with a pen, you would write the equal sign underneath the > sign, or even just double the lower part of the arrow.


What do expressions which use numbers or other symbols and an equal sign mean?

In mathematics, such expressions indicate that the value of the expression to the left of the equal sign has the same value as the expression to the right of the equal sign. In some cases, it can also be interpreted to mean that the expression on one side of the equal sign can be used in place of the expression on the other side of the equal sign (say in manipulating algebraic expressions). In computer languages, the equal sign is sometimes also used to indicate that the value of the expression to the right of the equal sign is to be transferred to the location indicated by the expression to the left of the equal sign. The expression to the left of the equal sign is usually a single variable that represents a memory location.

Related questions

What is the Use of a double dollar sign in php?

A double dollar sign in php makes a variable with a name equal to the value of the original variable. It works like this:$var = "keith";$$var = "palmer";print ($keith);// The output is: palmer


What is the mathematical approximately sign?

The double tilde symbol "≈" approximately equal to


What do you call a symbol usually a letter that contains an equal sign?

There is no letter or symbol in the English language that contains an equal sing except the equal sign. There might be other languages that use the equal sign.


Does everyone use algebra?

YES!! You use algebra in your everyday lives. Adding is considered an equation. An equation is a problem with an equal sign. An expression has no answer (an equal sign).


You use this symbol in an equation to indicate a sum?

An equal sign


What is different between equals equals and equals method in java?

== (the double equal sign) is used to compare two values (resulting in true if they are equal, false otherwise). = (a single equal sign) is used to assign a value to a variable.


What does 8 minus negative 3 equal?

8 minus negative three or 8--3 equal positive 11. The double negative converts the minus sign into a plus sign and the negative into a positive.


Is at least algebra symbol?

At least means "greater than or equal to". In this browser it can be written as >=, but if you were writing with a pen, you would write the equal sign underneath the > sign, or even just double the lower part of the arrow.


will a Equal sign used in a expression?

"Will a[n] Equal sign used in a expression" do WHAT!"Will a[n] Equal sign used in a expression" do WHAT!"Will a[n] Equal sign used in a expression" do WHAT!"Will a[n] Equal sign used in a expression" do WHAT!


What do expressions which use numbers or other symbols and an equal sign mean?

In mathematics, such expressions indicate that the value of the expression to the left of the equal sign has the same value as the expression to the right of the equal sign. In some cases, it can also be interpreted to mean that the expression on one side of the equal sign can be used in place of the expression on the other side of the equal sign (say in manipulating algebraic expressions). In computer languages, the equal sign is sometimes also used to indicate that the value of the expression to the right of the equal sign is to be transferred to the location indicated by the expression to the left of the equal sign. The expression to the left of the equal sign is usually a single variable that represents a memory location.


Why can you not use an equals sign for a chemical equation?

Chemical equations have frequently an equal sign (=) between reactants and products.


Who first use the equal sign and in which century?

al khwarizmi in the 20th century