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Cleanest way to write retry logic?
...
{
public static void Do(
Action action,
TimeSpan retryInterval,
int maxAttemptCount = 3)
{
Do<object>(() =>
{
action();
return null;
}, retryInterval, maxAttemptCount);
}
public static T Do<T>(
...
Java Replacing multiple different substring in a string at once (or in the most efficient way)
...sb, tokens.get(matcher.group(1)));
}
matcher.appendTail(sb);
System.out.println(sb.toString());
Once the regular expression is compiled, scanning the input string is generally very quick (although if your regular expression is complex or involves backtracking then you would still need to benchmar...
Calculate the median of a billion numbers
...
Ah, my brain has just kicked into gear, I have a sensible suggestion now. Probably too late if this had been an interview, but never mind:
Machine 1 shall be called the "control machine", and for the sake of argument either it starts with all the data, ...
Do you use NULL or 0 (zero) for pointers in C++?
...e NULL as it was defined as (void*)0 . You could not assign NULL to any pointer other than void* , which made it kind of useless. Back in those days, it was accepted that you used 0 (zero) for null pointers.
...
Why no generics in Go?
... does Go not have generic types?
Generics may well be added at some point. We don't feel an urgency for them, although we understand some programmers do.
Generics are convenient but they come at a cost in complexity in the type system and run-time. We haven't yet found a design that gives ...
How do I make a reference to a figure in markdown using pandoc?
...
This only helps if you convert to TeX but not if you also want to create HTML from the same Markdown source.
– Jakob
Aug 2 '12 at 8:33
...
Using Enums while parsing JSON with GSON
...on(new FileReader("input.json"), TruncateElement.class);
System.out.println(element.lower);
System.out.println(element.upper);
System.out.println(element.delimiter);
System.out.println(element.scope.get(0));
}
}
class AttributeScopeDeserializer implements JsonDeserializer<Attr...
Are Java static calls more or less expensive than non-static calls?
... benchmarking code has an additional constant overhead of incrementing one integer variable, checking a boolean variable, and looping if not true.
I suppose the results will vary from CPU to CPU, and from JVM to JVM, so give it a try and see what you get:
import java.io.*;
class StaticVsInstanceB...
How to prevent XSS with HTML/PHP?
...n saving or outputting client input.
HTML Encoding
htmlspecialchars will convert any "HTML special characters" into their HTML encodings, meaning they will then not be processed as standard HTML. To fix our previous example using this method:
<?php
echo '<div>' . htmlspecialchars($_GET[...
Aren't promises just callbacks?
...d error callback for all occurred exceptions.
Not to mention having to convert things to promises.
That's quite trivial actually with good promise libraries, see How do I convert an existing callback API to promises?
s...