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Why is using 'eval' a bad practice?

... -1: "Very dangerous and insecure" is false. The other three are outstandingly clear. Please reorder them so that 2 and 4 are the first two. It's only insecure if you are surrounded by evil sociopaths who are looking for ways to subvert your application. – S.Lott ...
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On localhost, how do I pick a free port number?

...ying to play with inter-process communication and since I could not figure out how to use named pipes under Windows I thought I'll use network sockets. Everything happens locally. The server is able to launch slaves in a separate process and listens on some port. The slaves do their work and submit ...
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“ArrayAdapter requires the resource ID to be a TextView” xml problems

... When you use this constructor: new ArrayAdapter<String>(this, R.layout.a_layout_file, this.file) R.Layout.a_layout_file must be the id of a xml layout file containing only a TextView(the TextView can't be wrapped by another layout, like a LinearLayout, RelativeLayout etc!), something like ...
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Ruby: How to post a file via HTTP as multipart/form-data?

...owser does) and throws an exception (since browsers are supposed to warn about this behavior). THe other alternative is curb but I've never had any luck installing curb in windows. – Matt Wolfe Mar 6 '10 at 9:19 ...
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How do you match only valid roman numerals with a regular expression?

Thinking about my other problem , i decided I can't even create a regular expression that will match roman numerals (let alone a context-free grammar that will generate them) ...
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Linq: What is the difference between Select and Where

... Where methods are available in Linq. What should every developer know about these two methods? For example: when to use one over the other, any advantages of using one over the other, etc. ...
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Linq to Sql: Multiple left outer joins

I'm having some trouble figuring out how to use more than one left outer join using LINQ to SQL. I understand how to use one left outer join. I'm using VB.NET. Below is my SQL syntax. ...
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How do I check if a list is empty?

...is better then implicit', correct? This check doesn't seem very explicit about what is is checking. – James McMahon Nov 22 '11 at 6:14 ...
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What is the difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout?

Is there any difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout in .NET? 6 Answers ...
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Why are these numbers not equal?

...ng on page 9) David Goldberg, "What Every Computer Scientist Should Know About Floating-point Arithmetic," ACM Computing Surveys 23, 1 (1991-03), 5-48 doi>10.1145/103162.103163 (revision also available) The Floating-Point Guide - What Every Programmer Should Know About Floating-Point Arithmetic 0...