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Why does typeof NaN return 'number'?
...e or cosine of a number which is less than −1 or
greater than +1.
All these values may not be the same. A simple test for a NaN is to test value == value is false.
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Test or check if sheet exists
Basically I loop through all sheets in the origin workbook then set destsheet in the destination workbook to the sheet with the same name as the currently iterated one in the origin workbook.
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What are the most interesting equivalences arising from the Curry-Howard Isomorphism?
...nd C-H to many interesting logics and formulations of logics to obtain a really wide variety of correspondences. Here I've tried to focus on some of the more interesting ones rather than on the obscure, plus a couple of fundamental ones that haven't come up yet.
evaluation | proof norm...
What are Vertex Array Objects?
...k of it as a geometry object. (As an old time SGI Performer programmer, I call them geosets.) The instance variables/members of the object are your vertex pointer, normal pointer, color pointer, attrib N pointer, ...
When a VAO is first bound, you assign these members by calling
glEnableClientStat...
Rubymine: How to make Git ignore .idea files created by Rubymine
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That doesn't really work when the .idea folder is already under tracking
– ACV
Jan 28 '19 at 9:45
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Can a class member function template be virtual?
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Templates are all about the compiler generating code at compile-time. Virtual functions are all about the run-time system figuring out which function to call at run-time.
Once the run-time system figured out it would need to call a templ...
Which Radio button in the group is checked?
... .FirstOrDefault(r => r.Checked);
Note that this requires that all of the radio buttons be directly in the same container (eg, Panel or Form), and that there is only one group in the container. If that is not the case, you could make List<RadioButton>s in your constructor for each...
SQLAlchemy - Getting a list of tables
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All of the tables are collected in the tables attribute of the SQLAlchemy MetaData object. To get a list of the names of those tables:
>>> metadata.tables.keys()
['posts', 'comments', 'users']
If you're using the...
Local Storage vs Cookies
I want to reduce load times on my websites by moving all cookies into local storage since they seem to have the same functionality. Are there any pros/cons (especially performance-wise) in using local storage to replace cookie functionality except for the obvious compatibility issues?
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How to stop tracking and ignore changes to a file in Git?
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Just calling git rm --cached on each of the files you want to remove from revision control should be fine. As long as your local ignore patterns are correct you won't see these files included in the output of git status.
Note that...