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SQL - using alias in Group By
... @MichaelBuen Seems potentially problematic to me. From a quick test it looks as though if there is an alias and a base table column with the same name the latter gets priority? SQL Fiddle. So if relying on this group by alias a later schema change could silently break your query and chan...
Equivalent of .try() for a hash to avoid “undefined method” errors on nil? [duplicate]
...reason why in the suggested form of this method (below) the (usually ugly) test for .is_a?(Hash) is used instead of (usually better) .respond_to?(:[]):
class Hash
def get_deep(*fields)
fields.inject(self) {|acc,e| acc[e] if acc.is_a?(Hash)}
end
end
a_hash = {:one => {:two => {:three ...
What is a method that can be used to increment letters?
...ell, == works, and if I wanted to be super sure, I could use ===, but I've tested it, and it's fine. Thanks again!
– Sean Kendle
Aug 19 '16 at 13:25
...
How can I create an object based on an interface file definition in TypeScript?
...the class, it will show in compiled JS as an empty method. Example:
class TestClass {
a: number;
b: string;
c: boolean;
}
compiles into
var TestClass = (function () {
function TestClass() {
}
return TestClass;
})();
which carries no value. Interfaces, on the other hand,...
How to change language settings in R
...
For me worked:
Sys.setlocale("LC_MESSAGES", "en_US.utf8")
Testing:
> Sys.setlocale("LC_MESSAGES", "en_US.utf8")
[1] "en_US.utf8"
> x[3]
Error: object 'x' not found
Also working to get english messages:
Sys.setlocale("LC_MESSAGES", "C")
To reset to german messages I used
...
Mercurial error: abort no username supplied
... YOUR NAME <EMAIL@HOST.COM>
verbose = true
save and "hg commit -m 'test'"
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Center a popup window on screen?
...${h}, top=${y}, left=${x}`);
}
Implementation:
popupWindow('google.com', 'test', window, 200, 100);
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数据挖掘——分词入门 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...，我们来实战一下如何基于词典的分词：
public class TestPositiveMatch {
public static void main(String[] args) {
String str = "我爱这个中华人民共和国大家庭";
List normalDict = new ArrayList();
normalDict.add("");
normalDic...
Convert all first letter to upper case, rest lower for each word
...
Untested but something like this should work:
var phrase = "THIS IS MY TEXT RIGHT NOW";
var rx = new System.Text.RegularExpressions.Regex(@"(?<=\w)\w");
var newString = rx.Replace(phrase,new MatchEvaluator(m=>m.Value.ToL...
Saving changes after table edit in SQL Server Management Studio
...d so that it is under source control. This also makes it easier to refresh testing changes after production has been pushed down to dev to enable developers to be working against fresher data.
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