Download ((INSTALL)) Nut For Switch
Margart Kalvig
The switch statement evaluates an expression, matching the expression's value against a series of case clauses, and executes statements after the first case clause with a matching value, until a break statement is encountered. The default clause of a switch statement will be jumped to if no case matches the expression's value.
A case clause used to match against expression. If the value of expression matches the value of any caseExpressionN, execution starts from the first statement after that case clause until either the end of the switch statement or the first encountered break.
A switch statement first evaluates its expression. It then looks for the first case clause whose expression evaluates to the same value as the result of the input expression (using the strict equality comparison) and transfers control to that clause, executing all statements following that clause.
If no matching case clause is found, the program looks for the optional default clause, and if found, transfers control to that clause, executing statements following that clause. If no default clause is found, the program continues execution at the statement following the end of switch. By convention, the default clause is the last clause, but it does not need to be so. A switch statement may only have one default clause; multiple default clauses will result in a SyntaxError.
You can use the break statement within a switch statement's body to break out early, often when all statements between two case clauses have been executed. Execution will continue at the first statement following switch.
In the appropriate context, other control-flow statements also have the effect of breaking out of the switch statement. For example, if the switch statement is contained in a function, then a return statement terminates the execution of the function body and therefore the switch statement. If the switch statement is contained in a loop, then a continue statement stops the switch statement and jumps to the next iteration of the loop.
This example will output the error "Uncaught SyntaxError: Identifier 'message' has already been declared", because the first const message = 'hello'; conflicts with the second const message = 'hi'; declaration, even when they're within their own separate case clauses. Ultimately, this is due to both const declarations being within the same block scope created by the switch body.
In the following example, if expr evaluates to Bananas, the program matches the value with case case 'Bananas' and executes the associated statement. When break is encountered, the program breaks out of switch and executes the statement following switch. If break were omitted, the statement for the case 'Cherries' would also be executed.
This example will output the error \"Uncaught SyntaxError: Identifier 'message' has already been declared\", because the first const message = 'hello'; conflicts with the second const message = 'hi'; declaration, even when they're within their own separate case clauses. Ultimately, this is due to both const declarations being within the same block scope created by the switch body.
The design of the Switch was aimed to bridge the polarization of the gaming market at the time, creating a device that could play "leisurely" video games along with games that are aimed to be played "deeply", according to Shinya Takahashi and Yoshiaki Koizumi, general manager and deputy general manager of Nintendo's Entertainment Planning & Development Division (EPD) respectively.[16] This approach also would apply to the cultural lifestyle and gaming differences between Japanese and Western players; Japanese players tend to play on the go and with social groups, while Western players tend to play at home by themselves.[23] The design of the Switch would meet both cultures, and certain games, like 1-2-Switch, could potentially make social gaming more acceptable in Western culture.[24] Two key elements that were set to address this mixed market were the ability for the unit to play either on a television screen or as a portable and the use of detachable controllers.[16] The "Switch" name was selected not only to refer to the console's ability to switch from handheld to home console modes, but to present "the idea of being a 'switch' that will flip and change the way people experience entertainment in their daily lives".[25]
There are three gameplay modes that can be used with the Switch; "TV mode" with the console slid into the dock to support play on a television, "Tabletop mode" with the console placed on a table or other flat surface using its kickstand for shared gaming away from a dedicated screen, or in "Handheld mode" as a standard portable tablet device.[100][101][48] Users can switch between these modes simply by placing the console in the dock or removing it, extending or retracting the kickstand, and detaching or connecting the Joy-Con.[48] Games may be designed to play only in specific modes; for example, Voez initially could not be played in TV mode and relied on touchscreen controls.[102] Support for controllers and TV mode was later added to Voez in January 2018 via an update for the game.[103] Another example is Super Mario Party, which does not support Handheld mode.[104]
Note: Note that unlike some other languages, the continue statement applies to switch and acts similar to break. If you have a switch inside a loop and wish to continue to the next iteration of the outer loop, use continue 2.
The if, if-else and switch statements select statements to execute from many possible paths based on the value of an expression. The if statement executes a statement only if a provided Boolean expression evaluates to true. The if-else statement allows you to choose which of the two code paths to follow based on a Boolean expression. The switch statement selects a statement list to execute based on a pattern match with an expression.
The preceding example also demonstrates the default case. The default case specifies statements to execute when a match expression doesn't match any other case pattern. If a match expression doesn't match any case pattern and there's no default case, control falls through a switch statement.
A switch statement executes the statement list in the first switch section whose case pattern matches a match expression and whose case guard, if present, evaluates to true. A switch statement evaluates case patterns in text order from top to bottom. The compiler generates an error when a switch statement contains an unreachable case. That is a case that is already handled by an upper case or whose pattern is impossible to match.
The default case can appear in any place within a switch statement. Regardless of its position, the default case is evaluated only if all other case patterns aren't matched or the goto default; statement is executed in one of the switch sections.
Within a switch statement, control can't fall through from one switch section to the next. As the examples in this section show, typically you use the break statement at the end of each switch section to pass control out of a switch statement. You can also use the return and throw statements to pass control out of a switch statement. To imitate the fall-through behavior and pass control to other switch section, you can use the goto statement.
A case pattern may be not expressive enough to specify the condition for the execution of the switch section. In such a case, you can use a case guard. That is an additional condition that must be satisfied together with a matched pattern. A case guard must be a Boolean expression. You specify a case guard after the when keyword that follows a pattern, as the following example shows:
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