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Getting distance between two points based on latitude/longitude
...s.name/experiments/haversine/
The aplet does good for the two points I am testing:
6 Answers
...
M_PI works with math.h but not with cmath in Visual Studio
...n 0;
}
Compiles and prints pi like is should: cl /O2 main.cpp /link /out:test.exe.
There must be a mismatch in the code you have posted and the one you're trying to compile.
Be sure there are no precompiled headers being pulled in before your #define.
...
querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
...ttps://jsperf.com/getelementsbyclassname-vs-queryselectorall/18
It runs a test on the 2 x examples above, plus it chucks in a test for jQuery's equivalent selector as well. my test results were as follows:
getElementsByClassName = 1,138,018 operations / sec - <<< clear winner
querySelecto...
How to write :hover condition for a:before and a:after?
... span {
font-size:12px;
}
a {
color:green;
}
.test1>a:hover span {
display:none;
}
.test1>a:hover:before {
color:red;
content:"Apple";
}
</style>
</head>
<body>
<div class="test1">
<a href="#"&...
Why is it slower to iterate over a small string than a small list?
... 9 LOAD_CONST 6 (('a', 'b', 'c'))
as tuples are immutable. Test:
>>> python3 -m timeit '[x for x in ("a", "b", "c")]'
1000000 loops, best of 3: 0.369 usec per loop
Great, back up to speed.
For Python 2:
def list_iterate():
[item for item in ["a", "b", "c"]]
dis.dis...
How to write LDAP query to test if user is member of a group?
I want to write an LDAP query which tests whether a user (sAMAccountName) is a member of a particular group. Is it possible to do that so that I get either 0 or 1 result records?
...
How to write a:hover in inline CSS?
...t link, and I really wish it worked, sadly it does not. Just to confirm, I tested using the syntax style="{color:green;} :hover { color: red; }" and firefox managed to color the link green, but ignored the hover. Chrome ignored both. Continued testing would be pretty pointless.
...
SQLAlchemy: cascade delete
...ied on the parent (as opposed to it being applied to the child like in the test scenario).
However, defining the relationship on the Child does NOT make sqlalchemy consider Child the parent. It doesn't matter where the relationship is defined (child or parent), its the foreign key that links the tw...
Can I have an IF block in DOS batch file?
...f if statements to handle that.
Secondly, that %GPMANAGER_FOUND% == true test looks mighty suspicious to me. I don't know what the environment variable is set to or how you're setting it, but I very much doubt that the code you've shown will produce the result you're looking for.
The following s...
Clean code to printf size_t in C++ (or: Nearest equivalent of C99's %z in C++)
...
@ChrisMarkle A quick test shows me it doesn't work in MinGW. Also the MS site doesn't list it (msdn.microsoft.com/en-us/library/tcxf1dw6%28v=vs.100%29.aspx). I suppose the answer is no.
– wump
Sep 9 '12 at 1...