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How many and which are the uses of “const” in C++?
... really 2 main uses of const in C++.
Const values
If a value is in the form of a variable, member, or parameter that will not (or should not) be altered during its lifetime you should mark it const. This helps prevent mutations on the object. For instance, in the following function I do not nee...
What kind of Garbage Collection does Go use?
...cted.
Start the collector too early, and the application will perform too many garbage collections, wasting CPU resources.
Start the collector too late, and the application will exceed the desired maximum heap growth.
Achieving the right balance without sacrificing concurrenc...
How to create materialized views in SQL Server?
... white papers for more background:
Creating an Indexed View
Improving Performance with SQL Server 2008 Indexed Views
Basically, all you need to do is:
create a regular view
create a clustered index on that view
and you're done!
The tricky part is: the view has to satisfy quite a number of...
When to use setAttribute vs .attribute= in JavaScript?
...
You should always use the direct .attribute form (but see the quirksmode link below) if you want programmatic access in JavaScript. It should handle the different types of attributes (think "onload") correctly.
Use getAttribute/setAttribute when you wish to deal with ...
How are software license keys generated?
...tDigit = x % 10;
CORRECT WAY TO DO IT
Windows XP takes quite a bit of information, encrypts it, and puts the letter/number encoding on a sticker. This allowed MS to both verify your key and obtain the product-type (Home, Professional, etc.) at the same time. Additionally, it requires online act...
Common MySQL fields and their appropriate data types
...monly used fields such as these. For instance, I have determined that an unformatted US phone number is too big to be stored as an unsigned int, it must be at least a bigint.
...
What's the best way to put a c-struct in an NSArray?
...structure p, not a pointer to it. The @encode directive provides all the information necessary about how big the structure is. When you release the NSValue (or when the array does), its copy of the structure is destroyed. If you've used getValue: in the meantime, you're fine. See the "Using Values" ...
URL matrix parameters vs. query parameters
... would recommend that you stick with query parameters for things like HTML forms and simple, single-level HTTP APIs.
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CSS :after not adding content to certain elements
...es include images (<img> tags),
plugins (<object> tags), and form elements (<button>, <textarea>,
<input>, and <select> tags). All other elements types can be referred
to as non-replaced elements.
:before and :after only work with non-replaced elements.
F...
C++ templates Turing-complete?
...it :-) This code compiles (gcc-4.9) but gives no output - a little more information, like a blog post, would be great.
– Alfred Bratterud
Mar 11 '15 at 8:45
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