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What is the easiest way to remove the first character from a string?
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This elegant slice!(0) really should be the selected answer, as using asdf[0] = '' to remove the first character is ridiculous (just like using gsub with regex and shooting a fly with a howitzer).
– f055
Mar 15 '16 at 19:32
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Conceptually, how does replay work in a game?
...ame visual result. If you need randomness, create a set of random numbers, select a seed value when the game is played, and save that seed value in the replay.
In general having randomness in a game is a bad idea. Even for things like multiplayer, you can't have half your players able to see aroun...
NodeJS - Error installing with NPM
...n 2: Install Visual Studio 2015 (or modify an existing installation) and select Common Tools for Visual C++ during setup. This also works with the free Community and Express for Desktop editions.
???? [Windows Vista / 7 only] requires .NET Framework 4.5.1
Launch cmd, npm config set msvs...
How to change an application icon programmatically in Android?
...ication's icon from the program so next time they would see the previously selected icon in the launcher.
10 Answers
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What are the underlying data structures used for Redis?
...m-ish unique users") or with replacement ("give me 7 cards, but after each selection, put the card back so it can potentially be sampled again").
For all possible operations on sets, see the sets docs.
Sorted Sets
Redis sorted sets are sets with a user-defined ordering.
For simplicity, you can think...
How to use localization in C#
...ings.resx") by doing the following: Right-click Properties in the project, select Add -> New Item... in the context menu, then in the list of Visual C# Items pick "Resources file" and name it strings.resx.
Add a string resouce in the resx file and give it a good name (example: name it "Hello" wit...
Forcing a WPF tooltip to stay on the screen
...to persist longer without further fanfare. Doing this still allows you to selectively apply a smaller value in context-specific places, as well, exactly as in the other answer. (But as always, this is only valid if you are the application -- if you're writing a control library or something else th...
For each row return the column name of the largest value
...s.method = "first")) %>% # or 'last'
filter(dept_rank == 1) %>%
select(-dept_rank)
# A tibble: 3 x 3
# Groups: id [3]
id dept cnt
<chr> <chr> <dbl>
1 2 V1 8.
2 3 V2 5.
3 1 V3 9.
# if you wanted to keep the original wide data f...
Java's Interface and Haskell's type class: differences and similarities?
... class to other classes, define static methods and constructors that would select an implementation based on what return type is required in calling context, define methods that take arguments of the same type as the class implementing the interface, and various other things that don't really transl...
Check if a class is derived from a generic class
...f (parent == cur || (isParameterLessGeneric && cur.GetInterfaces().Select(i => GetFullTypeDefinition(i)).Contains(GetFullTypeDefinition(parent))))
return true;
else if (!isParameterLessGeneric)
if (GetFullTypeDefinition(parent) == cur &&...