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Rails: how do I validate that something is a boolean?

...oth Rails 3 and 4, having validates :field, inclusion: [true, false] would test for inclusion in a list of values, with the side-effect to test for the field's presence (unless one of those values is nil of course). – Martin Carel Jul 14 '15 at 19:38 ...
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File Hash 扩展:文件哈希计算和 Base64 编码文件,sha256、sha512 哈希 ·...

... when Button1.Click() { Label1.Text = GetFileSha2561.GetSha256("/sdcard/test.txt") Label2.Text = JustBase641.Base64TextEncode(TextBox1.Text) } 同时计算 SHA256 和 SHA512 when Button1.Click() { Label1.Text = GetFileSha2561.GetSha256("/sdcard/test.txt") Label2.Te...
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What is the expected syntax for checking exception messages in MiniTest's assert_raises/must_raise?

What is the expected syntax for checking exception messages in MiniTest's assert_raises / must_raise ? 4 Answers ...
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How can I render a list select box (dropdown) with bootstrap?

... Test: http://jsfiddle.net/brynner/hkwhaqsj/6/ HTML <div class="input-group-btn select" id="select1"> <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-expanded="false"&gt...
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Templated check for the existence of a class member function?

...{ int helloworld() { return 0; } }; struct Generic {}; // SFINAE test template <typename T> class has_helloworld { typedef char one; struct two { char x[2]; }; template <typename C> static one test( decltype(&C::helloworld) ) ; template <typename C> s...
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How to supply value to an annotation from a Constant java

...a quick example, I use something like this fairly often: import org.junit.Test; import static org.junit.Assert.*; public class MyTestClass { private static final int TEST_TIMEOUT = 60000; // one minute per test @Test(timeout=TEST_TIMEOUT) public void testJDK() { assertTrue...
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POST data with request module on Node.JS

...type' : 'application/x-www-form-urlencoded'}, url: 'http://localhost/test2.php', body: "mes=heydude" }, function(error, response, body){ console.log(body); }); share | improve this ans...
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How do I create a new line in Javascript?

...ML tag for a newline: document.write("<br>"); The string Hello\n\nTest in your source will look like this: Hello! Test The string Hello<br><br>Test will look like this in HTML source: Hello<br><br>Test The HTML one will render as line breaks for the person vie...
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Get value of a string after last slash in JavaScript

...st three ways: A regular expression: var result = /[^/]*$/.exec("foo/bar/test.html")[0]; ...which says "grab the series of characters not containing a slash" ([^/]*) at the end of the string ($). Then it grabs the matched characters from the returned match object by indexing into it ([0]); in a ...
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How to call shell commands from Ruby

...!) to use quotes in a command, like so: directorylist = %x[find . -name '*test.rb' | sort] Which, in this case, will populate file list with all test files under the current directory, which you can process as expected: directorylist.each do |filename| filename.chomp! # work with file end ...