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How can I profile C++ code running on Linux?
... Another nice introduction to perf exists at archive.li/9r927#selection-767.126-767.271 (Why the SO gods decided to delete that page from the SO knowledge base is beyond me....)
– ragerdl
How do I create a WPF Rounded Corner container?
...n. The extensions are VisiFire charting objects. The user pushes a button, selected from the list of buttons, to execute the desired chart.
' Create a ListBox of Buttons, one button for each MEF charting component.
For Each c As Lazy(Of ICharts, IDictionary(Of String, Object)) In ext.C...
Browsers' default CSS for HTML elements
... monospace }
pre { white-space: pre }
button, textarea,
input, select { display: inline-block }
big { font-size: 1.17em }
small, sub, sup { font-size: .83em }
sub { vertical-align: sub }
sup { vertical-align: super }
table { border-spacing:...
Simple explanation of MapReduce?
...e reduced to a scalar value.
So if you think of it like a SQL statement
SELECT SUM(salary)
FROM employees
WHERE salary > 1000
GROUP by deptname
We can use map to get our subset of employees with salary > 1000
which map emits to the barrier into group size buckets.
Reduce will sum each of...
Use of var keyword in C#
...oing things like var customers = whatever; var query = from c in customers select stuff it doesn't matter what the exact type of 'customers' is. It's obvious how you can use it, and that's enough. And if the actual type is cumbersome, it's worthwhile to suppress it.
– Joren
...
What's the equivalent of use-commit-times for git?
... file .mtimes in git repository, updates them accordingly on commits (jsut selectively the mtimes of staged files) and applies them on checkout. It works even with cygwin/mingw versions of git (but you may need to copy some files from standard cygwin into git's folder)
The solution consists of 3 fi...
What is the smallest possible valid PDF?
... This will not work, you need to define a font resource and select it inside the page content for the text to show up.
– yms
Aug 21 '15 at 20:36
...
Local Storage vs Cookies
...
Cleard by JS or by Clear Browsing Data of the browser.
You can select when the data must be sent to the server.
The capacity is 5MB.
Data is stored indefinitely, and must be a string.
Only have one type.
share
...
What is the performance cost of having a virtual method in a C++ class?
..."type(-identifying) number" in the objects and using a switch statement to select the type-specific code. This avoids function call overhead completely - just doing a local jump. There is a potential cost to maintainability, recompilation dependencies etc through the forced localisation (in the sw...
Foreign Key to multiple tables
...ulkon I know this is an old question but the query would be something like SELECT t.Subject AS ticketSubject, CASE WHEN u.Name IS NOT NULL THEN u.Name ELSE g.Name END AS ticketOwnerName FROM Ticket t INNER JOIN Party p ON t.Owner=p.PartyId LEFT OUTER JOIN User u ON u.ID=p.PartyId LEFT OUTER JOIN Gro...