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How to determine if a list of polygon points are in clockwise order?
...ve N points numbered from 0 to N-1, then you must calculate: Sum( (x[(i+1) mod N] - x[i]) * (y[i] + y[(i+1) mod N]) ) for i = 0 to N-1. I.e., must must take the index Modulo N (N ≡ 0) The formula works only for closed polygons. Polygons have no imaginary edges.
– Olivier Jaco...
GUI not working after rewriting to MVC
...
As you've discovered, the Model–View–Controller pattern is no panacea, but it offers some advantages. Rooted in MVC, the Swing separable model architecture is discussed in A Swing Architecture Overview. Based on this outline, the following example...
How can I list ALL grants a user received?
...ct grants for a particular user:
select tpm.name privilege,
decode(mod(oa.option$,2), 1, 'YES', 'NO') grantable,
ue.name grantee,
ur.name grantor,
u.name owner,
decode(o.TYPE#, 0, 'NEXT OBJECT', 1, 'INDEX', 2, 'TABLE', 3, 'CLUSTER',
4, 'VIEW...
SVN how to resolve new tree conflicts when file is added on two branches
... and then merging in my changes from branch1 (3) A co-worker had copied my mods from branch1 to his own branch, added further mods, and then merged back to the trunk; (4) I now wanted to merge the latest changes from trunk into my current working branch, branch2. This is with svn 1.6.17.
The merge...
X-Frame-Options Allow-From multiple domains
...d or new projects. Pages or Web apps using it may break at any time.
The modern alternative is the Content-Security-Policy header, which along many other policies can white-list what URLs are allowed to host your page in a frame, using the frame-ancestors directive.
frame-ancestors supports multip...
Rename specific column(s) in pandas
...ditional expressions like:
df.columns = ['log(gdp)' if x=='gdp' else 'cap_mod' if x=='cap' else x for x in df.columns]
Or, construct a mapping using a dictionary and perform the list-comprehension with it's get operation by setting default value as the old name:
col_dict = {'gdp': 'log(gdp)', 'c...
Where to put view-specific javascript files in an ASP.NET MVC application?
... how I did it:
In the web.config folder in the root of /Views you need to modify two sections to enable the webserver to serve the files:
<system.web>
<httpHandlers>
<add path="*.js" verb="GET,HEAD" type="System.Web.StaticFileHandler" />
<ad...
Android Game Keeps Getting Hacked [closed]
...oof, but might remove some of the interest for hacking the game.
Freemium model
1) Make the first 5-10 levels free so people can learn the game and have some fun without paying. Less will want to hack the first level and the game will spread even further by Freemium model.
Shareware/clustered lev...
Is unsigned integer subtraction defined behavior?
... cannot be represented by the resulting unsigned integer type is
reduced modulo the number that is one greater than the largest value that can be
represented by the resulting type.
(ISO/IEC 9899:1999 (E) §6.2.5/9)
As you can see, (unsigned)0 - (unsigned)1 equals -1 modulo UINT_MAX+1, or ...
Can I combine :nth-child() or :nth-of-type() with an arbitrary selector?
... ' myClass ')]//tr[contains(concat(' ', @class, ' '), ' row ')][position() mod 2)=1]
Other solutions using different technologies are left as an exercise to the reader; this is just a brief, contrived example for illustration.
For what it's worth, there is a proposal for an extension to the :nth-c...