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For example, when testing a program that takes a user's personal details and verifies their credit card number, a developer may decide to add a magic string shortcut whereby entering the unlikely input of "***" as a credit card number would cause the program to automatically proceed as if the card were valid, without spending time verifying it.
The code 0x2F is used in EBCDIC. In the programming language C (created in 1972), and in many languages influenced by it such as Python , the bell character can be placed in a string or character constant with \a . 'a' stands for "alert" or "audible" and was chosen because \b was already used for the backspace character.
In Firefox, create a bookmark, with the following code in the "location" field. In Internet Explorer, create a favourite, and once it's created, right click it, select "properties" and place the following code in the "URL" box (it will give you an invalid protocol warning, but you can ignore this, and it will work).
Generally, an escape character is not a particular case of (device) control characters, nor vice versa.If we define control characters as non-graphic, or as having a special meaning for an output device (e.g. printer or text terminal) then any escape character for this device is a control one.
The programmer might infer the meaning after reading the code carefully, but it is not obvious. [6] Magic numbers become particularly confusing when the same number is used for different purposes in one section of code. It is easier to alter the value of the number, as it is not duplicated.
An OK button which can be invoked by pressing a return key, or possibly an enter key The enter key is a computer innovation, which in most cases causes a command line , window form, or dialog box to operate its default function.
A study from the University of Maryland found that Android developers that used only Stack Overflow as their programming resource tended to write less secure code than those who used only the official Android developer documentation from Google, while developers using only the official Android documentation tended to write significantly less ...
The uniform access principle of computer programming was put forth by Bertrand Meyer (originally in his book Object-Oriented Software Construction).It states "All services offered by a module should be available through a uniform notation, which does not betray whether they are implemented through storage or through computation."