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Installing R with Homebrew
I'm trying to install R using Homebrew. I ran these commands which are recommended elsewhere on SO:
12 Answers
...
xtree(1796): warning C4800: “int”: 将值强制为布尔值“true”或“false...
...e\xtree(1775): 参见对正在编译的函数 模板 实例化“std::pair<_Ty1,_Ty2> std::_Tree<_Traits>::_Insert_nohint<std::pair<const _Kty,_Ty>&,_Nodety>(bool,_Valty,_Nodety)”的引用
1> with
1> [
1> _Ty1=std::_Tree_iterator<std::_Tree_val<std::_Tree_simple_t...
Where is Erlang used and why? [closed]
...ng in its SMS and authentication systems.
• Motorola is using Erlang in call processing products in the public-safety industry.
• Ericsson uses Erlang in its support nodes, used in GPRS and 3G mobile networks
worldwide.
The most popular open source Erlang applications include the following:
•...
Perform .join on value in array of objects
...Array.prototype.map is what you're looking for if you want to code functionally.
[
{name: "Joe", age: 22},
{name: "Kevin", age: 24},
{name: "Peter", age: 21}
].map(function(elem){
return elem.name;
}).join(",");
In modern JavaScript:
[
{name: "Joe", age: 22},
{name: "Kevin", age: 2...
A non well formed numeric value encountered
...atetime description into a Unix timestamp (integer):
date("d", strtotime($_GET['start_date']));
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How to get notified about changes of the history via history.pushState?
...);
}
// ... whatever else you want to do
// maybe call onhashchange e.handler
return pushState.apply(history, arguments);
};
})(window.history);
Your jsfiddle becomes:
window.onpopstate = history.onpushstate = function(e) { ... }
You can monkey-patch window.h...
convert_tz returns null
...ving these files to a different location such as /usr/share/zoneinfo/.bak/ allows for the command
mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root -p mysql
to fully populate all of the expected timezone information.
This may or may not be a bug in my installed version of MySQL:
$ mysql -...
How to write a test which expects an Error to be thrown in Jasmine?
... not possible"));
you should be passing a function into the expect(...) call. Your incorrect code:
// incorrect:
expect(parser.parse(raw)).toThrow(new Error("Parsing is not possible"));
is trying to actually call parser.parse(raw) in an attempt to pass the result into expect(...),
...
How can building a heap be O(n) time complexity?
...itten this to describe how a max heap works. This is the type of heap typically used for heap sort or for a priority queue where higher values indicate higher priority. A min heap is also useful; for example, when retrieving items with integer keys in ascending order or strings in alphabetical order...
Check if a number is int or float
...>> if isinstance(x, int):
print 'x is a int!'
x is a int!
_EDIT:_
As pointed out, in case of long integers, the above won't work. So you need to do:
>>> x = 12L
>>> import numbers
>>> isinstance(x, numbers.Integral)
True
>>> isinstance(x, int)
F...