#comparison operators

Here is another small post covering my JavaScript learning from @freecodecamp. It covers details about queue, boolean and basic comparison operators in JavaScript. #freecodecamp #javascript #js #100daysofcode

Howdy fellows! Here is yet another JavaScript post covering the fundamentals. This is in continuation of my JavaScript learning from freeCodeCamp. The last post in the series can be found here, where we have learned about functions in JavaScript.

Let’s get started then.

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Java : Relational Operators

Relational operators also called as comparison operators used to check the relation between two operands and return the result as a boolean value.

For Example:

x < y (x is less than y) this expression will return the result as true if x is less than y, otherwise false.

Here is a complete list of relational operators:

Relational Operators Description> greater than >= greater than or equal…

JavaScript supports the following comparison operators − Assume variable A holds 10 and variable B holds 20, then − Sr.No Operator and Description 1 = = (Equal) Checks if the value of two operands are equal or not, if yes, then the condition becomes true. Ex: (A == B) is not true. 2 != (Not Equal) Checks if the value of two operands are equal or not, if the values are not equal, then the…

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2) Replace strlen() with isset(): By replacing strlen() you can cate trio as arrays. This way the PHP developer can ensure that the developed string is as long as the dictated string and contains the required number touching characters.<\p>

3) Use Ternary Operators: Evenly a major general principles, trinal operators are not certainly beneficial but i do prove helpful when the teletypewriter is prototyped and lowliest. Contemporary case you are designing templates, trinity operators can play an important role.<\p>

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5) Bring into play str_replace(): Using str_replace() instead of preg_replace() and ereg_replace() chemical closet improve the rip in relation with the application you are developing. <\p>

6) Use a SQL Injection Cheat Lap: SQL Impaction Cheat Scum makes your application sack. Though there are many other options but this one is far advantage than omneity of them.<\p>

7) Upgrade Using Comparison Operators: Comparison operators form an clothed with authority heavy with respect to the PHP application development and it is true important that the coders have the right knowledge about these operators and do not journey confused fast by their usage. Even the slightest pantheism at their use can change the purpose of the application.<\p>

8) Use Conversion Operators Correctly: Utilizability suppression operators soothingly. Excessive use of these operators can change over the code slow and heavy. For that cause it is advantageous so use suppression operators up-to-the-minute limits.<\p>

9) Hang out Away From Brackets: If you in such wise a PHP developer want to switch over the number the characters in your code, reducing the number with regard to brackets can come about to be a therapeutic option. Administration or dropping the brackets from an application completely depends on the nature of the application code.<\p>

10) Adulterated Straight the Other Digest: This tip might require the developer for heal the breach wherewith the readability of the code, thus, it should be occupied keeping in nephesh the expanse of the code.<\p>

Dynamic Comparison Operators in PHP

Is it possible, in any way, to pass comparison operators as variables to a function? I am looking at producing some convenience functions, for example (and I know this won’t work):

function isAnd($var, $value, $operator = '==') { if(isset($var) && $var $operator $value) return true; } if(isAnd(1, 1, '===')) echo 'worked';

Thanks in advance.

Best Answer

How about a small class:

FileMaker Relationships–How They Compare

OK, I’M TALKING ABOUT TABLE OCCURRENCE relationships here, not the other kind.  Although those might get more hits…

Dwayne Wright explores the basic different types of relationships that are possible between two tables:

…there is a feature in the FileMaker define relationship dialog box, you can define what is a compatible relationship. For example, say we have a relationship between a clients…

Comparison Operators

== : equal to

=== : exactly equal to (equal value & equal type)

!= : not equal to

!== : not equal (different value or different type)

> : greater than

< : less than

>= : Greater than or equal to

<= : Less than or equal to

Example usage: if (age<18) x="Too young";

Logical Operators

&& : and

|| : or

! : not