Objective-C control statements and loops !
In programming, as in life, you have to make decisions and act on them. Objective-C provides control statements and loops to help your program take action. You may want to repeat a set of instructions based on some condition or state, for example, or…
Objective-C Operators
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Functions and Methods in Objective-C
Functions and Methods in Objective-C,A function is a named block of code that can be called upon to perform a specific task. It can be provided data on which to perform the task and is capable of returning a result to the code that called it. The…
Swift Functions!
Swift Functions are self-contained chunks of code that perform a specific task. You give a function a name that identifies what it does, and this name is used to “call” the function to perform its task when needed. A Swift 4 function can be as simple as…
Troubleshoot the Scanner !
How to Troubleshoot the Scanner of an all-in-one printer is a straightforward process of elimination. You begin at the most basic level, striking off those issues that are not the problem and work your way up the ladder of complexity until you have a…
Troubleshooting your Mac of SMC and PRAM/NVRAM
Troubleshooting your Mac, The first things I’d try are to reset both the NVRAM and SMC in that order. Before following the steps below, ensure you have no external hardware connected and make sure you use the built-in keyboard. Reset the NVRAM Shut…
Optional in Swift !
An optional in Swift is basically a constant or variable that can hold a value OR no value. The value can or cannot be nil. It is denoted by appending a “?” after the type declaration. An optional in Swift is basically a constant or variable that can…