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Dictionary vs Object - which is more efficient and why?
... mentioned other factors such as memory allocations, constructor call time etc.
– Vinay Sajip
Aug 26 '09 at 19:34
Is t...
What's the false operator in C# good for?
... allow for nullable boolean types prior to the Nullable (i.e. int?, bool?, etc.) type being introducted into the language in C#2. Thus you would store an internal value indicating whether the value is true or false or null, i.e. in your example >0 for true, <0 for false and ==0 for null, and t...
How much size “Null” value takes in SQL Server
...like nvarchar(max) varchar(max) Null will takes 0 bytes and for int, chars etc it will take the default size to default values they have ?
– Rocky Singh
Sep 16 '10 at 22:10
ad...
Simple logical operators in Bash
...nds are executed in a separate subprocess, so any redirection, assignment, etc. performed inside the parentheses has no effect outside the parentheses.
With a leading dollar sign, $(…) is a command substitution: there is a command inside the parentheses, and the output from the command is used a...
Difference between Lookup() and Dictionary(Of list())
...alue>, which means that it's efficient to use with Count(), ElementAt() etc.
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bool operator ++ and --
...R TRUE is TRUE, x OR FALSE is x, x AND FALSE is FALSE and x AND TRUE is x, etc using the same operators for boolean and bit-wise operations (since VB assumes twos-complement so -1 is all 1 bits). However, this can cause some strange bugs in VB if the coder doesn't catch that 2 (true) AND 4 (true) re...
How does collections.defaultdict work?
...interesting when the values in a dictionary are collections (lists, dicts, etc.) In this case, the value (an empty list or dict) must be initialized the first time a given key is used. While this is relatively easy to do manually, the defaultdict type automates and simplifies these kinds of operatio...
How to exclude a directory in find . command
...since -deletewill first delete the leaves, then the parents of the leaves, etc... But for specifying -prune to make sense, find needs to hit a directory and stop descending it, which clearly makes no sense with -depth or -delete on.
Performance
I set up a simple test of the three top upvoted ans...
Custom error pages on asp.net MVC3
...ust a little note. Since I wanted to render a View in each case (404, 500, etc) on each ActionResult I returned a View. However I did a try catch around Application_Error contents and I case of failure an static HTML page is returned. (I can post the code if someone desire)
– J...
Does C# have extension properties?
...nage internally dictionaries and it could be difficult (memory management, etc...).
For this, you can still use the TypeDescriptor/ConditionalWeakTable technique described earlier and with the property extension, hides it under a nice property.
Syntax is still subject to change as implies this issu...