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Makefile variable as prerequisite

...-hostname: guard-HOSTNAME ./changeHostname.sh ${HOSTNAME} If you call make change-hostname, without adding HOSTNAME=somehostname in the call, then you'll get an error, and the build will fail. share | ...
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How do I determine scrollHeight?

... What about browser support? All major versions of browsers support it? IE8+? – SexyBeast Jan 21 '14 at 15:39 2 ...
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Test if element is present using Selenium WebDriver?

... Good call djangofan! I successfully used this strategy by changing the driver timeouts' implicit wait to zero, then changing it back to its previous value. – emery May 27 '15 at 17:18 ...
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Django - Difference between import django.conf.settings and import settings

... Also note that all settings names should be upper-case. That is, if your have a var my_var in your settings then this will fail: from django.conf import settings... settings.my_var. But if you name it MY_VAR it will succeed! ...
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SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/

I am trying to do the Michael Hartl tutorial. When I attempt to install rails 3.2.14 in my gemset, I get the following issue: ...
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Swift - Cast Int into enum:Int

... started this week) and I'm migrating my app from Objective-C. I have basically the following code in Objective-C that works fine: ...
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How to change the order of DataFrame columns?

... @FooBar, the type of cols is list; it even allows duplicates (which will be discarded when used on the dataframe). You are thinking of Index objects. – alexis Feb 28 '17 at 15:19 ...
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How to read the RGB value of a given pixel in Python?

... Fortunately installing PIL is very straightforward in Linux and Windows (don't know about Mac) – heltonbiker Sep 28 '11 at 16:20 ...
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Operator Overloading with C# Extension Methods

...hods to add an operater overload to the C# StringBuilder class. Specifically, given StringBuilder sb , I'd like sb += "text" to become equivalent to sb.Append("text") . ...
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Convert php array to Javascript

...write your own. However, you should also consider upgrading your PHP if at all possible! – Spudley Apr 11 '11 at 9:25 5 ...