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Draw on HTML5 Canvas using a mouse

... trying to use this code, but have issues with the drawing being off vertically when I'm not scrolled all the way down on the page. What should I change in this code? – Cameron Darlington Dec 11 '14 at 22:13 ...
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In JPA 2, using a CriteriaQuery, how to count results

...onfuse these concepts :-) JPA comes with very powerfull/ complex API that allows you to do multiple joins/ fetches/ aggregations/ aliases etc in a single query. You have to deal with it while counting. – G. Demecki Sep 14 '15 at 8:16 ...
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Java regex email

First of all, I know that using regex for email is not recommended but I gotta test this out. 20 Answers ...
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How to install a specific version of a ruby gem?

Using the command-line gem tool, how can I install a specific version of a gem? 6 Answers ...
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Why is (object)0 == (object)0 different from ((object)0).Equals((object)0)?

... The reason the calls behave different is they bind to very different methods. The == case will bind to the static reference equality operator. There are 2 independent boxed int values created hence they are not the same reference. In th...
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Programmatically Lighten or Darken a hex color (or rgb, and blend colors)

Here is a function I was working on to programmatically lighten or darken a hex color by a specific amount. Just pass in a string like "3F6D2A" for the color ( col ) and a base10 integer ( amt ) for the amount to lighten or darken. To darken, pass in a negative number (i.e. -20 ). ...
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How can I make SQL case sensitive string comparison on MySQL?

...y default. This means that if you search with col_name LIKE 'a%', you get all column values that start with A or a. To make this search case sensitive, make sure that one of the operands has a case sensitive or binary collation. For example, if you are comparing a column and a string that both have...
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Why do we have map, fmap and liftM?

Why do we have three different functions that do essentially the same thing? 1 Answer ...
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Randomize a List

... Shuffle method, which is asking for trouble if the method is going to be called repeatedly. Below is a fixed, full example based on a really useful comment received today from @weston here on SO. Program.cs: using System; using System.Collections.Generic; using System.Threading; namespace Simple...
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Converting ISO 8601-compliant String to java.util.Date

... hours off UTC, so the string does not necessarily end with ":00". ISO8601 allows only the number of hours to be included in the time zone, so "+01" is equivalent to "+01:00" ISO8601 allows the usage of "Z" to indicate UTC instead of "+00:00". The easier solution is possibly to use the data type c...