2012 - Chinh Do

Replacement straws for Thermos Bottles

August 21, 2012
Chinh Do
Other
35 Comments

Sorry this has nothing to do with coding.

But if you have kids and have the Thermos aluminum straw Bottles such as the Thermos Funtainer or Foogo Straw bottles, you can get replacement straws directly from Thermos for $1 a piece. My kids like to bite the straws and they get destroyed pretty quickly. If you need just the top part of the straw, that would be $0.50.

Apparently, people are reselling these straws on Ebay and other sites for $7-$10 a piece! So Thermos is limiting each order to 5 straws. I am putting this out there to hopefully direct people to the source.

Call Thermos directly at 1-800-831-9242 to order your replacement straws. If outside the US, try 1-847-439-7821.

Removing Excess Whitespace from a String

March 9, 2012
Chinh Do
Dotnet/.NET - C#, Programming
2 Comments

I was looking for the most efficient way to remove excess white space from a string and wrote the following benchmark. Guess which algorithm is faster?

const int iterations = 200000;
const string expr = " Hello    world! Why    are so    many spaces?  Testing One   two three    four    five.";

// Remove excess space using Regex
var doRegex = new Action(() =>
{
    for (int i = 0; i < iterations; i++)
    {
        var newStr = Regex.Replace(expr, @"\s{2,}", " ");
    }
});


// Remove excess space using Split/Join
var doSplit = new Action(() =>
{
    for (int i = 0; i < iterations; i++)
    {
        var newStr = String.Join(" ", expr.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries));
    }
});

var benchMark = new Func<string, Action, long>((name, a) => {
    var sw = Stopwatch.StartNew();
    a();
    sw.Stop();
    Console.WriteLine(name + ": " + sw.ElapsedMilliseconds);
    return sw.ElapsedMilliseconds;
});

// Warming up
Console.WriteLine("Warming up.");
doRegex();
doSplit();

// Run benchmark
long regexElapsed = benchMark("Regex", doRegex);
long splitElapsed = benchMark("Split", doSplit);

On my PC, the Split method is about 7.5 times faster than Regex.