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Charles's user avatar
Charles's user avatar
Charles
Senior Consultant
  • Member for 15 years, 10 months
  • Last seen this week
  • Albany, NY, USA
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About

Consultant, father, full-stack developer, and mathematician.

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16
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75
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48
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70
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7
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Top posts

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91
Validate that input is in this time format - "HH:MM"
Oct 19, 2010
39
Character limit of a javascript string variable
Nov 17, 2015
35
Bit twiddling: which bit is set?
Aug 12, 2010
33
Declaring and using MySQL varchar variables
Oct 20, 2010
31
Integer overflow in C: standards and compilers
Sep 9, 2010
30
Why does this take so long to match? Is it a bug?
Sep 23, 2014
27
Optimize me! (C, performance) -- followup to bit-twiddling question
Aug 17, 2010
26
Lint-like program for Perl?
Jul 26, 2011
23
Integer cube root
Dec 2, 2010
21
Match pattern anywhere in string?
Aug 13, 2014

Top Meta posts

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New site design and philosophy for Stack Overflow: Starting February 24, 2026 at beta.stackoverflow.com
4
Clean up the [*language*] tags

Top network posts

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270
Does $\pi$ contain all possible number combinations?
108
Is this of any real importance to the mathematical scientific community?
91
Hard code golf: Regex for divisibility by 7
63
Quality of random numbers
62
Why does $\sum_{n=1}^\infty \frac{1}{n}$ diverge?