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PHP check whether property exists in object or class

... property_exists( mixed $class , string $property ) if (property_exists($ob, 'a')) isset( mixed $var [, mixed $... ] ) if (isset($ob->a)) isset() will return false if property is null Example 1: $ob->a = null var_du...
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Python 2.7 getting user input and manipulating as string without quotations

... Use raw_input() instead of input(): testVar = raw_input("Ask user for something.") input() actually evaluates the input as Python code. I suggest to never use it. raw_input() returns the verbatim string entered by the user. ...
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How can I search for a multiline pattern in a file?

... Regular Expressions GREP. For example, you need to find files where the '_name' variable is immediatelly followed by the '_description' variable: find . -iname '*.py' | xargs pcregrep -M '_name.*\n.*_description' Tip: you need to include the line break character in your pattern. Depending on yo...
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How to link C++ program with Boost using CMake

... In CMake you could use find_package to find libraries you need. There usually is a FindBoost.cmake along with your CMake installation. As far as I remember, it will be installed to /usr/share/cmake/Modules/ along with other find-scripts for common lib...
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Getting a random value from a JavaScript array

...u've already got underscore or lodash included in your project you can use _.sample. // will return one item randomly from the array _.sample(['January', 'February', 'March']); If you need to get more than one item randomly, you can pass that as a second argument in underscore: // will return tw...
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How to get the full path of running process?

... wmiQueryString = "SELECT ProcessId, ExecutablePath, CommandLine FROM Win32_Process"; using (var searcher = new ManagementObjectSearcher(wmiQueryString)) using (var results = searcher.Get()) { var query = from p in Process.GetProcesses() join mo in results.Cast<ManagementObjec...
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Disable individual Python unit tests temporarily

...he unittest.skip decorator. @unittest.skip("reason for skipping") def test_foo(): print('This is foo test case.') @unittest.skip # no reason needed def test_bar(): print('This is bar test case.') For other options, see the docs for Skipping tests and expected failures. ...
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Is Chrome's JavaScript console lazy about evaluating arrays?

...confirmed Webkit bug that explains this issue: https://bugs.webkit.org/show_bug.cgi?id=35801 (EDIT: now fixed!) There appears to be some debate regarding just how much of a bug it is and whether it's fixable. It does seem like bad behavior to me. It was especially troubling to me because, in Chro...
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In Vim is there a way to delete without putting text in the register?

... without saving it in a register, you can use the "black hole register": "_d Of course you could also use any of the other registers that don't hold anything you are interested in. share | improv...
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How do I install cygwin components from the command line?

...tended setup mode'). (Note that you need to use setup-x86.exe or setup-x86_64.exe as appropriate.) See http://cygwin.com/packages/ for the package list. share | improve this answer | ...