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• VBScript Quiz Answers, Parts Eleven and Twelve

  11) X and Y are both Booleans. Which of the following always assigns True ? Why? (a) Z = Not X Or Y = X Imp Y (b) Z = X Imp Y = Not X Or Y (c) Z = X Eqv Y = Not X XOr Y (d) Z = Not X XOr Y = X Eqv Y (a) assigns False if X and Y are both False . The others Read More... Posted Tuesday, April 05, 2005 12:25 PM by Eric Lippert | 7 Comments Filed under: VBScript, Scripting, Puzzles

• VBScript Quiz Answers, Parts Nine and Ten

  9) Which of these statements is syntactically legal? Why? (a) Const Z = -+-+-+-10 (b) Const Y = 2 + 2 (c) Const X = .1e310 (d) Dim W(+10) (a) is legal. The rest are illegal. (a) is legal because you can put as many unary positive or negative operators Read More... Posted Wednesday, March 30, 2005 10:25 AM by Eric Lippert | 7 Comments Filed under: VBScript, Scripting, Puzzles

• VBScript Quiz Answers, Part Eight

  8) Which of these programs is syntactically legal? (a) Class Bar Function Foo End Function Function Foo End Function End Class (b) Class Bar If Blah Then Function Foo End Function Else Function Foo End Function End If End Class (c) If Blah Then Function Read More... Posted Wednesday, March 23, 2005 11:51 AM by Eric Lippert | 7 Comments Filed under: VBScript, Scripting, Puzzles

• VBScript Quiz Answers, Part Seven

  Before I get into today's entry, a brief editorial comment: Pestilence is a frickin' pain in the rear . Famine was no problem at all, Rodney didn't touch me once, and Master Kaen fell to my powerful fists, but two Amulets of Life Saving, one Wand of Death Read More... Posted Monday, March 21, 2005 4:58 PM by Eric Lippert | 8 Comments Filed under: VBScript, Scripting, Puzzles

• VBScript Quiz Answers, Part Six

  This question was designed to highlight some of the oddities in VBScript's rules for what makes a legal identifier. 6) Which of the following are syntactically legal? Why? (a) Explicit Error (b) For[i=1]=[To[1]To[1] (c) For i =.For To Step Step Step (d) Read More... Posted Wednesday, March 16, 2005 10:48 AM by Eric Lippert | 14 Comments Filed under: VBScript, Scripting, Puzzles

• VBScript Quiz Answers, Part Four, Plus, More Trivia!

  Last night I gave away more copies of my book at our Visual Studio Tools for Office developer lab, but this time I made the trivia questions a whole lot easier. I played five rounds of "Odd Man Out" -- you know, like from Sesame Street. One of these things Read More... Posted Thursday, March 03, 2005 10:06 AM by Eric Lippert | 4 Comments Filed under: VBScript, Scripting, Puzzles

• VBScript Quiz Answers, Part Three, and RegEx Memory Leak

  Co-Winner Nicholas Allen's prize is en route to his home now. Steven Bone, I need your mailing address still. Before I give the answer to #3, a quick note. NTBUGTRAQ is reporting a memory leak in the VBScript regular expression parsing code. I took a Read More... Posted Tuesday, March 01, 2005 10:21 AM by Eric Lippert | 1 Comments Filed under: VBScript, Scripting, Puzzles

• VBScript Quiz Answers, Part Two

  When you're getting close to shipping a beta for a big product, the dev team is either insanely busy tracking down last-minute issues, or deathly bored. This week was one of the insanely busy weeks! Lots of late nights. It looks like next week should Read More... Posted Friday, February 25, 2005 2:29 PM by Eric Lippert | 13 Comments Filed under: VBScript, Scripting, Puzzles

• VBScript Quiz Answers, Part One

  There were a grand total of eight entries to my VBScript quiz -- I think I made it too hard! Congratulations to Steven Bone and Nicholas Allen, who both got all twelve right, with more-or-less correct explanations of what was happening here. Guys, send Read More... Posted Friday, February 18, 2005 11:25 AM by Eric Lippert | 7 Comments Filed under: VBScript, Scripting, Puzzles

• Win Fabulous Prizes!

  I want to do a long -- potentially very long -- series of blog articles about the fundamental theoretical nature of formal computer languages, and the practical problems in producing compilers for them. To kick this off in a lighthearted way on a Friday, Read More... Posted Thursday, February 10, 2005 11:10 PM by Eric Lippert | 9 Comments Filed under: VBScript, Scripting, Puzzles

• Pop Quiz

  Every non-trivial language has "gotchas". Here's one. Consider the following JScript, which creates an object and sets some fields to zero: var x = { 0 : 0, 123 : 0, 1.23 : 0, blah : 0, "dude!" : 0, "-1.23" : 0 }; A little weird, but it works just fine. Read More... Posted Thursday, July 29, 2004 10:56 AM by Eric Lippert | 21 Comments Filed under: JScript, Scripting, Puzzles

• The Stygian Depths Of Hacked-Together Scripts

  Last time on FABULOUS ADVENTURES: Eric Lippert: The second term is asymptotically insignificant compared to the first, so we'll throw it away, and declare that any sort on a list of n items has at least a worst case of O(n log n) comparisons. Leo McGarry: Read More... Posted Thursday, May 13, 2004 4:48 PM by Eric Lippert | 30 Comments Filed under: VBScript, Scripting, Performance, Puzzles

• The Rarefied Heights of Mathematical Purity

  A number of people have asked me for the software I used yesterday to extract the Google queries from the .TEXT referrer log. Have patience, and all will be revealed. In this and the next blog entries I'm going to demonstrate the difference between computer Read More... Posted Wednesday, May 12, 2004 5:43 PM by Eric Lippert | 11 Comments Filed under: Scripting, Performance, Puzzles