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C# equivalent to Java's charAt()?
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You can index into a string in C# like an array, and you get the character at that index.
Example:
In Java, you would say
str.charAt(8);
In C#, you would say
str[8];
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get the latest fragment in backstack
...hen you added the Fragment to the backstack with addTobackStack(tag).
int index = getActivity().getFragmentManager().getBackStackEntryCount() - 1
FragmentManager.BackStackEntry backEntry = getFragmentManager().getBackStackEntryAt(index);
String tag = backEntry.getName();
Fragment fragment = getFrag...
Reuse a parameter in String.format?
...l, character, and numeric types have the following syntax:
%[argument_index$][flags][width][.precision]conversion
The optional argument_index is a decimal integer indicating the position of the argument in the argument list. The first argument is referenced by "1$", the second by "2$", et...
How to create a fixed-size array of objects
...tried both: 1) sprites[0] = spritePawn and 2) sprites.insert(spritePawn, atIndex:0).
– Henri Lapierre
Jun 24 '14 at 20:23
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A beginner's guide to SQL database design [closed]
...ure that every column that you do "where column = val" in any query has an index. Maybe not the most perfect index in the world for the data type, but at least an index.
Set up your foreign keys. Also set up ON DELETE and ON MODIFY rules where relevant, to either cascade or set null, depending on yo...
CSS: Set a background color which is 50% of the width of the window
...n position even when your users scroll. You may have to fiddle with some z-indexes later, to make sure your other elements are above the background div, but it shouldn't be too complex.
If you have issues, just make sure the rest of your content has a z-index higher than the background element and ...
rmagick gem install “Can't find Magick-config”
...opard 10.6 using RVM, Ruby 1.9.2-head and Rails 3.05. Responses to similar questions recommended installing ImageMagick, which I successfully did. Other suggested installing the "libmagick9-dev library", however, I can not figure out how to do this.
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Java regex capturing groups indexes
...is defined to be group number 0.
Any capturing group in the pattern start indexing from 1. The indices are defined by the order of the opening parentheses of the capturing groups. As an example, here are all 5 capturing groups in the below pattern:
(group)(?:non-capturing-group)(g(?:ro|u)p( (neste...
How to create an alias for a command in Vim?
...ith supplementary searching, I've found that someone asked nearly the same question as I.
:command <AliasName> <string of command to be aliased>
will do the trick.
Please be aware that, as Richo points out, the user command must begin with a capital letter.
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How to sort an array of associative arrays by value of a given key in PHP?
...s case. In the OP's example, the array to be sorted has sequential numeric indexes rather than string indexes, so usort is more appropriate. Using uasort on a sequentially-indexed array will result in a sorted array which is not ordered by its numeric indexes, such that the first element seen in a f...