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Linux command (like cat) to read a specified quantity of characters
...tes=[-]N
print the first N bytes of each file; with the leading '-', print all but the last N bytes of each file
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How do I check that a number is float or integer?
...00% incorrect. The values null, empty string, 1.0 and numerous others will all register incorrectly as integers (even with the === check).
– whoblitz
Sep 11 '13 at 2:59
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What is the meaning of the term “free function” in C++?
...hat free functions also don't take any arguments. But I am not sure. These all are my assumptions. So could anybody define free function?
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Facebook access token server-side validation for iPhone app
...KEN is your app's token that you got from step 1.
The debug endpoint basically dumps all information about a token, so it'll respond with something like this:
{
data: {
app_id: YOUR_APP_ID,
is_valid: true,
metadata: {
sso: "iphone-safari"
},
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Difference between static class and singleton pattern?
...s you say that either a singleton or a static method isn't thread-safe? Usually both should be implemented to be thread-safe.
The big difference between a singleton and a bunch of static methods is that singletons can implement interfaces (or derive from useful base classes, although that's less co...
Compile Views in ASP.NET MVC
...nclude the RazorGenerator nuget package in you ASP.NET MVC project and install the "Razor Generator" extension under item under Tools → Extensions and Updates.
We use this and the overhead per compile with this approach is much less. On top of this I would probably recommend .NET Demon by RedGate...
Javadoc: package.html or package-info.java
... explain "package annotation" -- an annotation which is to be applied to all of the classes in a package or otherwise to the packages as a whole. The tech.puredanger.com link was the only one to really explain why I should care. That said, it's a good, helpful link.
– Robop...
Browser support for URLs beginning with double slash
... This is an old post, but I also wanted to say it's not a good practice at all. Recently I had some trouble on one of our customers admin dashboard. The URL //code.jquery.com/jquery-2.1.3.min.js was not found and the library not loaded. I then try to load http://code.jquery.com/jquery-2.1.3.min.js a...
Visual Studio: How to “Copy to Output Directory” without copying the folder structure?
...try may not be visible from Visual Studio (2012, 2015, 2017), but once manually added to the csproj, it will appear in Visual Studio. The target path will not be editable through the UI though.
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sql primary key and index
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You are right, it's confusing that SQL Server allows you to create duplicate indexes on the same field(s). But the fact that you can create another doesn't indicate that the PK index doesn't also already exist.
The additional index does no good, but the only harm (very ...