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How do I raise the same Exception with a custom message in Python?

...ssign a special meaning to the elements of this tuple, while others are usually called only with a single string giving an error message.". So the code won't work arg[0] is not an error message (it could be an int, or it could be a string representing a file name). – Trent ...
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How to wait until an element exists?

...atch the DOM. It's only supported in newer browsers though, so you should fall back onto DOMNodeInserted when MutationObserver isn't available. let observer = new MutationObserver((mutations) => { mutations.forEach((mutation) => { if (!mutation.addedNodes) return for (let i = 0; i &...
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Weak and strong property setter attributes in Objective-C

...g' part (casting from NS to CF) is a little tricky. You still have to manually manage CFRelease() and CFRetain() for CF objects. When you convert them back to NS objects you have to tell the compiler about the retain count so it knows what you have done. Its all here. ...
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How can I get the current screen orientation?

...lues ORIENTATION_PORTRAIT and ORIENTATION_LANDSCAPE. Is there a way to get all the four values from ActivityInfo? (That is LANDSCAPE_REVERSE and PORTRAIT_REVERSE as well) – HRJ May 4 '11 at 9:56 ...
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WPF Blurry fonts issue- Solutions

...ems to make the font heavier Playing around with these settings didn't really improve the underlying problem, but can help by reducing the color bleeding effect for sensitive users. Another approach The best advice the Text Clarity article gave was increasing the font size and changing the font....
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General guidelines to avoid memory leaks in C++ [closed]

... programs? How do I figure out who should free memory that has been dynamically allocated? 29 Answers ...
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Can “using” with more than one resource cause a resource leak?

... No. The compiler will generate a separate finally block for each variable. The spec (§8.13) says: When a resource-acquisition takes the form of a local-variable-declaration, it is possible to acquire multiple resources of a given type. A using statement of the...
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In Python, how do I indicate I'm overriding a method?

... Based on this and fwc:s answer I created a pip installable package https://github.com/mkorpela/overrides From time to time I end up here looking at this question. Mainly this happens after (again) seeing the same bug in our code base: Someone has forgotten some "interface" i...
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What's the best way to store a group of constants that my program uses? [closed]

...way to store them? I don't think I want an Enum , because the data is not all the same type, and I want to manually set each value. Should I just store them all in an empty class? Or is there a better way? ...
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How to find the width of a div using vanilla JavaScript?

... All Answers are right, but i still want to give some other alternatives that may work. If you are looking for the assigned width (ignoring padding, margin and so on) you could use. getComputedStyle(element).width; //returns...