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What is the difference between Strategy design pattern and State design pattern?
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States store a reference to the context object that contains them. Strategies do not.
States are allowed to replace themselves (IE: to change the state of the context object to something else), while Strategies are not.
Strategies are passed to the context object as parameters, while States are cre...
Is it possible to set a custom font for entire of application?
...ail when you do that. So just "star" it please.
import java.lang.reflect.Field;
import android.content.Context;
import android.graphics.Typeface;
public final class FontsOverride {
public static void setDefaultFont(Context context,
String staticTypefaceFieldName, String fontAssetN...
How do you make a web application in Clojure? [closed]
...d, but because I like the language and I want to give it a try, what libraries and frameworks should I use?
16 Answers
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Why does this assert throw a format exception when comparing structures?
...ual, message);
Then we use string.Format with the parameters you've supplied:
string finalMessage = string.Format(template, parameters);
(Obviously there's cultures being provided, and some sort of sanitization... but not enough.)
That looks fine - unless the expected and actual values themsel...
C++ preprocessor __VA_ARGS__ number of arguments
...d Jan 23 '10 at 19:22
Kornel KisielewiczKornel Kisielewicz
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What's the best way of structuring data on firebase?
...o, see this excellent post on NoSQL data structures.
The main issue with hierarchical data, as opposed to RDBMS, is that it's tempting to nest data because we can. Generally, you want to normalize data to some extent (just as you would do with SQL) despite the lack of join statements and queries.
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How to get users to read error messages?
If you program for a nontechnical audience, you find yourself at a high risk that users will not read your carefully worded and enlightening error messages, but just click on the first button available with a shrug of frustration.
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What do the different readystates in XMLHttpRequest mean, and how can I use them?
...en readyState==3, but this isn't universally supported and shouldn't be relied upon.
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JavaScript global event mechanism
...n: ' + col;
extra += !error ? '' : '\nerror: ' + error;
// You can view the information in an alert to see things working like this:
alert("Error: " + msg + "\nurl: " + url + "\nline: " + line + extra);
// TODO: Report this error via ajax so you can keep track
// of what pages...
Looping in a spiral
A friend was in need of an algorithm that would let him loop through the elements of an NxM matrix (N and M are odd). I came up with a solution, but I wanted to see if my fellow SO'ers could come up with a better solution.
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