大约有 47,000 项符合查询结果（耗时：0.0504秒） [XML]
Why is rbindlist “better” than rbind?
...es where one has factor and other has character type for a column (Bug #2650)
It has problems with duplicate column names
see
Warning message: in rbindlist(allargs) : NAs introduced by coercion: possible bug in data.table? (Bug #2384)
rbind.data.frame rownames can be frustrating
rbindlist ca...
Labels for radio buttons in rails form
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answered Apr 14 '09 at 5:13
Matt HaleyMatt Haley
3,98433 gold badges2222 silver badges1616 bronze badges
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Remove characters after specific character in string, then remove substring?
...om/somepage.aspx?whatever";
int index = input.IndexOf("?");
if (index > 0)
input = input.Substring(0, index);
Edit: If everything after the last slash, do something like
string input = "http://www.somesite.com/somepage.aspx?whatever";
int index = input.LastIndexOf("/");
if (index > 0)
...
How to sort an array of objects with jquery or javascript [duplicate]
...owerCase();
return ((aName < bName) ? -1 : ((aName > bName) ? 1 : 0));
}
array.sort(SortByName);
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How to trigger the onclick event of a marker on a Google Maps V3?
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+100
I've found out the solution! Thanks to Firebug ;)
//"markers" is an array that I declared which contains all the marker of the map
/...
See “real” commit date in github (hour/day)
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305
Hover your mouse over the 2 years ago and you'll get the timestamp.
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What is this crazy C++11 syntax ==> struct : bar {} foo {};?
...tandard abstract UDT (User-Defined Type):
struct foo { virtual void f() = 0; }; // normal abstract type
foo obj;
// error: cannot declare variable 'obj' to be of abstract type 'foo'
Let's also recall that we can instantiate the UDT at the same time that we define it:
struct foo { foo() { cout &l...
Finding the handle to a WPF window
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answered Oct 12 '09 at 18:41
Gregory HigleyGregory Higley
14.1k88 gold badges5555 silver badges8585 bronze badges
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How to get a dependency tree for an artifact?
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Jul 27 '10 at 11:07
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Extract substring using regexp in plain bash
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Using pure bash :
$ cat file.txt
US/Central - 10:26 PM (CST)
$ while read a b time x; do [[ $b == - ]] && echo $time; done < file.txt
another solution with bash regex :
$ [[ "US/Central - 10:26 PM (CST)" =~ -[[:space:]]*([0-9]{2}:[0-9]{2}) ]] &&
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