if keyword - Conditional evaluation in Julia Last Updated : 12 Jul, 2025 Comments Improve Suggest changes Like Article Like Report Keywords in Julia are reserved words that have a specific meaning and operation to the compiler. These keywords can not be used as a variable name, doing the same will stop the execution process and an error will be raised. 'if' keyword in Julia is used to evaluate a condition. If the condition is true, the code after the if statement will be executed otherwise it will skip the same statement and will proceed with the further evaluation of the code. Syntax: if condition statement end Flowchart: Example: Python3 1== # Julia program to illustrate # the use of 'if' keyword # function definition function check_if(x) # if keyword if x > 10 println(x, " is greater than 10") end println("This is not in if") end # function call check_if(15) Output: 15 is greater than 10 This is not in if if keyword can also be used with the else keyword to execute another statement in case the if condition results to be false. Example: Python3 1== # Julia program to illustrate # the use of 'if' keyword # function definition function check_if(x) # if keyword if x > 10 println(x, " is greater than 10") else println(x, " is smaller than 10") end println("This is not in if") end # function call check_if(15) Output: 5 is smaller than 10 This is not in if Comment More infoAdvertise with us Next Article For loop in Julia A Abhinav96 Follow Improve Article Tags : Julia Julia-keywords Similar Reads For loop in Julia For loops are used to iterate over a set of values and perform a set of operations that are given in the body of the loop. For loops are used for sequential traversal. In Julia, there is no C style for loop, i.e., for (i = 0; i Syntax: for iterator in range statements(s) end Here, 'for' is the keywo 2 min read Julia Dictionary Dictionary in Julia is a collection of key-value pairs, where each value in the dictionary can be accessed with its key. These key-value pairs need not be of the same data type, which means a String typed key can hold a value of any type like Integer, String, float, etc. Keys of a dictionary can nev 7 min read Julia Language Introduction Julia is a high-level open-source programming language, developed by a group of 4 people at MIT. Julia is a dynamic, high-performance programming language that is used to perform operations in scientific computing. Similar to R Programming Language, Julia is used for statistical computations and dat 4 min read Vectors in Julia Vectors in Julia are a collection of elements just like other collections like Array, Sets, Dictionaries, etc. Vector are different from Sets because vectors are ordered collections of elements, and can hold duplicate values, unlike sets which require all the elements to be unique. Vectors are one-d 5 min read Printing Output on Screen in Julia Julia provides many methods of printing output on the screen. The Julia program starts with an interactive REPL (Read/ Evaluate /Print / Loop) as default. R: Reads what was typed;E: Evaluates the typed expression;P: Prints the return value;L: Loops back and repeats it ; It helps in outputting the r 3 min read String concatenation in Julia String concatenation in Julia is a way of appending two or more strings into a single string whether it is character by character or using some special characters end to end. There are many ways to perform string concatenation. Example: Input: str1 = 'Geeks' str2 = 'for' str3 = 'Geeks' Output: 'Gee 2 min read Opening and Reading a File in Julia File handling in Julia is achieved using functions such as open(), read(), and close(). There are many ways to read the contents of a file like readline(), readlines() and just read(). open(): To open a file existing in an absolute path, provided as the parameter.  read(): Read the contents of the f 4 min read Arrays in Julia Arrays in Julia are a collection of elements just like other collections like Sets, Dictionaries, etc. Arrays are different from Sets because arrays are ordered collection of elements, and can hold duplicate values, unlike sets which require all the elements to be unique. Arrays are N-Dimensional co 13 min read Getting rounded value of a number in Julia - round() Method The round() is an inbuilt function in julia which is used to round the specified number in different ways which are illustrated below- The default round process is done to the nearest integer, with ties (fractional values of 0.5) being rounded to the nearest even integer. The specified value x is ro 2 min read Comments in Julia Comments are the statements in a code that are ignored by the compiler at the time of execution. These statements are written to beautify the code, providing an explanation for the steps that are used in the code. During coding, proper use of comments makes maintenance easier and finding bugs easily 2 min read Like