conditional-statements

Is there any alternative way to implement a switch case in Java other than if else which is not looking good. A set of values will be there in combination, according to the selection corresponding method has to be executed. Presumably you're struggling with the requirement of case's being constant. Typically this is a code-smell, but there are things you can do. You might want to raise and link to another question that details why you're trying to switch. Map<String,Object> map = new HasMap<String,Object>(); // ... insert stuff into map // eg: map.add("something", new MyObject()); String key =

I have a user model with attributes 'first' and 'last' So for example User.first.first #=> "Charlie" User.first.last #=> "Brown" This User model also has a virtual attribute 'full_name' #user.rb def full_name [first,last].join(' ') end def full_name=(name) #don't know what to do with people w/ middle names split = name.split(' ') self.first = split[0] self.last = split[1] end So for example: User.first.full_name = "Charlie Brown" #=> "Charlie Brown" User.first.full_name = "Homer Simpson" #=> "Home Simpson" User.first.save User.first.first #=> "Homer" User.first.last #=> "Simpson" It'd be so

I'm just reviewing some of my old code (have some spare time), and I noticed a rather lengthy switch statement. Due to gaining new knowledge, I have since refactored it in the following form: private Dictionary<string, Action> createView { get { return new Dictionary<string, Action>() { {"Standard", CreateStudySummaryView}, {"By Group", CreateStudySummaryByGroupView}, {"By Group/Time", CreateViewGroupByHour} }; } } Would you consider this good practise, or is this simply a case of being superflous and unneccessary? I'm keen to ensure new techniques that I learn, are not being clever just for

Is it possible in Angular 2 to apply a pipe under condition? I would like to do something like: {{ variable.text | (variable.value ? SomePipe : OtherPipe) }} If not, what is the preferred way to achieve this effect? You need to change the syntax a bit: {{variable.value ? (variable.text | SomePipe) : (variable.text | pipe2)}} Plunker example Since such syntax isn't supported, I think that the only way to do that is to implement another pipe to handle the condition: @Pipe({ name: 'condition' }) export class ConditionPipe { transform(val,conditions) { let condition = conditions[0]; let

Is there a way to begin a block of code with a with statement, but conditionally? Something like: if needs_with(): with get_stuff() as gs: # do nearly the same large block of stuff, # involving gs or not, depending on needs_with() To clarify, one scenario would have a block encased in the with statement, while another possibility would be the same block, but not encased (i.e., as if it wasn't indented) Initial experiments of course give indentation errors.. If you want to avoid duplicating code and are using a version of Python prior to 3.7 (when contextlib.nullcontext was introduced) or even