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How to clone a case class instance and change just one field in Scala?
...cala case classes have a copy method that takes advantage of named/default params to work its magic:
val newPersona =
existingPersona.copy(sentMessages = existing.sentMessages + newMessage)
You can also create a method on Persona to simplify usage:
case class Persona(
svcName : String,
sv...
How to create a custom-shaped bitmap marker with Android map API v2 [duplicate]
... @Override protected Bitmap doInBackground(Void... params) { return Utils.loadBitmap(url); } }.execute();
– sonida
Apr 30 '13 at 3:45
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How do I convert a Ruby class name to a underscore-delimited symbol?
...ontains many useful more "semantic" attributes such as:
FooBar.model_name.param_key
#=> "foo_bar"
FooBar.model_name.route_key
#=> "foo_bars"
FooBar.model_name.human
#=> "Foo bar"
So you should use one of those if they match your desired meaning, which is likely the case. Advantages:
...
Why is the String class declared final in Java?
...se if it's not final you can pass a StringChild to some method as a String param, and it could be mutable (because a child class state change).
– helios
Jan 15 '10 at 1:23
4
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How do I correctly clone a JavaScript object?
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Also useful to specify true as the first param for deep copy: jQuery.extend(true, {}, originalObject);
– Will Shaver
Jun 21 '11 at 0:19
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Can I redirect the stdout in python into some sort of string buffer?
... This answer helped me when setting up an Environment object's stdout param for use with Httpie's core.py.
– fragorl
Dec 6 '17 at 23:52
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How to check if an object is nullable?
...
- so how about below. This is actually testing type T, but using the obj parameter purely for generic type inference (to make it easy to call) - it would work almost identically without the obj param, though.
static bool IsNullable<T>(T obj)
{
if (obj == null) return true; // obvious
...
How to change theme for AlertDialog
... problem is that you need different style definitions for different layout parameters. Here is a boilerplate based on the AlertDialog style of Holo Light Platform version 19 for a style file that should cover a bunch of the standard layout aspects like text sizes and background colors.
<style n...
How to load program reading stdin and taking parameters in gdb?
... doing it from a shell you'd do it like this:
% gdb myprogram
gdb> run params ... < input.txt
This seems to work within emacs too.
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What's the difference between echo, print, and print_r in PHP?
...in expressions whereas echo has a void return type; echo can take multiple parameters, although such usage is rare; echo is slightly faster than print. (Personally, I always use echo, never print.)
var_dump prints out a detailed dump of a variable, including its type and the type of any sub-items (...