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C# Sort and OrderBy comparison
...oArray call which creates the resulting array. Memory operations and array indexing are incredibly fast operations, but I still can't find the logic behind these results.
– Groo
Sep 17 '13 at 12:37
...
What is the difference between “git init” and “git init --bare”?
...n a non-bare repository
remote: error: is denied, because it will make the index and work tree inconsistent
remote: error: with what you pushed, and will require 'git reset --hard' to match
remote: error: the work tree to HEAD.
remote: error:
remote: error: You can set 'receive.denyCurrentBranch' c...
How to dynamic new Anonymous Class?
...n: just cast it to IDictionary<string, object>. Then you can use the indexer.
You use the same casting technique to iterate over the fields:
dynamic employee = new ExpandoObject();
employee.Name = "John Smith";
employee.Age = 33;
foreach (var property in (IDictionary<string, object>)e...
Efficient way to apply multiple filters to pandas DataFrame or Series
...
Pandas (and numpy) allow for boolean indexing, which will be much more efficient:
In [11]: df.loc[df['col1'] >= 1, 'col1']
Out[11]:
1 1
2 2
Name: col1
In [12]: df[df['col1'] >= 1]
Out[12]:
col1 col2
1 1 11
2 2 12
In [13]: df[(d...
How to know if user is logged in with passport.js?
...ddleware to check for authentication, as in "router.get('/', my_controller.index)", then passport is never consulted and req.user will always be undefined. This is frustrating because I want to allow any visitor to call an API, but tailor the content of the response depending on who is requesting.
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What is reflection and why is it useful?
...mples to get you started at http://docs.oracle.com/javase/tutorial/reflect/index.html
And finally, yes, the concepts are pretty much similar in other statically typed languages which support reflection (like C#). In dynamically typed languages, the use case described above is less necessary (since ...
Java, Classpath, Classloading => Multiple Versions of the same jar/project
...ate the response accordingly. (docs.oracle.com/cd/E19501-01/819-3659/beadf/index.html)
– Luca Putzu
Jul 19 '16 at 7:42
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How to get the number of characters in a std::string?
...ext) != U_SENTINEL)
{
++codepointCount;
}
// reset the index so we can use the structure again
UTEXT_SETNATIVEINDEX(text, 0);
return codepointCount;
}
void printStringInfo(const std::string& utf8)
{
UErrorCode status = U_ZERO_ERROR;
PUText text(utext_openUTF8...
What do the plus and minus signs mean in Objective-C next to a method?
... code.
@interface NSArray : NSObject {
}
+ (NSArray *)array;
- (id)objectAtIndex:(NSUInteger)index;
@end
// somewhere else:
id myArray = [NSArray array]; // see how the message is sent to NSArray?
id obj = [myArray objectAtIndex:4]; // here the message is sent to myArray
// Btw, in prod...
What's the difference between == and .equals in Scala?
...ml#isNaN(double)
Scala: http://www.scala-lang.org/files/archive/api/2.11.8/index.html#scala.Double@isNaN():Boolean
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