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How to get multiple counts with one SQL query?
...he COUNTs would do multiple table scans.
As an example, run the following script:
IF OBJECT_ID (N't1', N'U') IS NOT NULL
drop table t1
create table t1 (f1 int)
insert into t1 values (1)
insert into t1 values (1)
insert into t1 values (2)
insert into t1 values (2)
insert i...
Stopwatch vs. using System.DateTime.Now for timing events [duplicate]
...e.Now.
You can also check out these related links:
Environment.TickCount vs DateTime.Now
Is DateTime.Now the best way to measure a function's performance?
DateTime is good enough for precision to the second probably but anything beyond that I would recommend StopWatch.
...
How do I get my solution in Visual Studio back online in TFS?
...xplorer and select the Go Online option" fails (because e.g. you installed VS2015 preview).
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How do you get a list of the names of all files present in a directory in Node.js?
...ing a map of all paths first, then enumerating them. For simple build/util scripts (vs high performance web servers) you could use the sync version without causing any damage.
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Where is the “Create Unit Tests” selection?
...
This feature was cut from VS.
http://blogs.msdn.com/b/visualstudioalm/archive/2012/03/08/what-s-new-in-visual-studio-11-beta-unit-testing.aspx
Generate Unit Test Wizard – In VS2010 you could right click on a
method in your code and we would g...
Comparing Haskell's Snap and Yesod web frameworks
...e lead developer of Yesod.
I'm not sure what you don't like about the Javascript syntax: it is plain javascript with variable interpolation. As for CSS Yesod now has Lucius which allows you to also use plain CSS. For HTML, you can easily use any other library you want, including Heist (what Snap us...
Stack Memory vs Heap Memory [duplicate]
... programming in C++ and I am always wondering what exactly is stack memory vs heap memory. All I know is when I call new, I would get memory from heap. If if create local variables, I would get memory from stack. After some research on internet, the most common answer is stack memory is temporary an...
Entity Framework vs LINQ to SQL
Now that .NET v3.5 SP1 has been released (along with VS2008 SP1), we now have access to the .NET entity framework.
17 Answe...
MySQL INSERT INTO table VALUES.. vs INSERT INTO table SET
...cting one large query to insert a bunch of rows into a table in one query, vs. a query for each row, might have a performance improvement. Really don't know.
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How to “properly” create a custom object in JavaScript?
...ot that if you detach a method from its owner:
var ts= mycircle.toString;
alert(ts());
then this inside the method won't be the Circle instance as expected (it'll actually be the global window object, causing widespread debugging woe). In reality this typically happens when a method is taken and ...