switch-statement

来源： https://stackoverflow.com/questions/49814220/does-pattern-match-in-raku-have-guard-clause

来源： https://stackoverflow.com/questions/49814220/does-pattern-match-in-raku-have-guard-clause

来源： https://stackoverflow.com/questions/24085218/how-to-jump-to-another-case-statement-in-a-switch-case-condition-with-the-value

来源： https://stackoverflow.com/questions/24085218/how-to-jump-to-another-case-statement-in-a-switch-case-condition-with-the-value

问题 In C# 7.1 the below is valid code: object o = new object(); switch (o) { case CustomerRequestBase c: //do something break; } However, I want to use the pattern switch statement in the following scenario: public T Process<T>(object message, IMessageFormatter messageFormatter) where T : class, IStandardMessageModel, new() { switch (T) { case CustomerRequestBase c: //do something break; } } The IDE gives me the error "'T' is a type, which is not valid in the given context" Is there an elegant

问题 In C# 7.1 the below is valid code: object o = new object(); switch (o) { case CustomerRequestBase c: //do something break; } However, I want to use the pattern switch statement in the following scenario: public T Process<T>(object message, IMessageFormatter messageFormatter) where T : class, IStandardMessageModel, new() { switch (T) { case CustomerRequestBase c: //do something break; } } The IDE gives me the error "'T' is a type, which is not valid in the given context" Is there an elegant

问题 I am using Material UI's Switch component and I want to add text inside it. Also I need to make it square in shape. How to I add text inside the Switch component. It should say on when selected and off when default. I am using Material UI's Switch inside Formcontrol in reactjs form. <FormControlLabel label="Private ? " labelPlacement="start" control={ <Switch checked={this.state.checked} onChange={this.handleChange} color='primary' /> } /> 回答1: Here is an example of how to change the text

问题 I am using Material UI's Switch component and I want to add text inside it. Also I need to make it square in shape. How to I add text inside the Switch component. It should say on when selected and off when default. I am using Material UI's Switch inside Formcontrol in reactjs form. <FormControlLabel label="Private ? " labelPlacement="start" control={ <Switch checked={this.state.checked} onChange={this.handleChange} color='primary' /> } /> 回答1: Here is an example of how to change the text

问题 This question already has answers here : How to remove large if-else-if chain [duplicate] (6 answers) Closed yesterday . I have this if statements that check the ID of a sport and set an Image according to the sport. but I am curious if there is a more simple and shorter way to implement this. Thank you for the time and answers! if (sport.equals("1")) { sportImg.setImageResource(R.drawable.fudbal); } else if (sport.equals("2")) { sportImg.setImageResource(R.drawable.hokej); } else if (sport

问题 This question already has answers here : How to remove large if-else-if chain [duplicate] (6 answers) Closed yesterday . I have this if statements that check the ID of a sport and set an Image according to the sport. but I am curious if there is a more simple and shorter way to implement this. Thank you for the time and answers! if (sport.equals("1")) { sportImg.setImageResource(R.drawable.fudbal); } else if (sport.equals("2")) { sportImg.setImageResource(R.drawable.hokej); } else if (sport