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Which is preferred: Nullable.HasValue or Nullable != null?
...
It's pretty silly to complain about being able to set a Nullable to null or compare it to null given that's called Nullable. The problem is that people are conflating "reference type" with "can be null", but that's a conceptual confusion. Future C# will have non-nullable ref...
How to append to a file in Node?
... so your logs will not be written by timestamp. You can test with example, set 1000 in place of 100000, order will be random, depends on access to file.
If you want to append to a file, you must use a writable stream like this:
var stream = fs.createWriteStream("append.txt", {flags:'a'});
console....
DropDownList in MVC 4 with Razor
...();
}
public IEnumerable<SelectListItem> ActionsList { get; set; }
public string StudentGrade { get; set; }
}
//Enum Class:
public enum GradeTypes
{
A,
B,
C,
D,
E,
F,
G,
H
}
//Controller Action
public ActionResult Student()
{
Register...
Is “IF” expensive?
... processing) instructions from both sides of the branch, then discards the set it doesn't need once the outcome of the branch is known. This saves the extra memory access of a typical architecture in the event that it branches along the unpredicted path.
...
deny direct access to a folder and file by htaccess
...e a Files directive and disallow access to all files, then use it again to set the files that are accessible:
<Files ~ "^.*">
Deny from all
</Files>
<Files ~ "^index\.php|css|js|.*\.png|.*\.jpg|.*\.gif">
Allow from all
</Files>
...
Sort a list of tuples by 2nd item (integer value) [duplicate]
... @JeffSheffield: Notice that jamylak is doing the import in the setup code (outside the timing), not the tested code. That's perfectly reasonable, because most programs will need to sort more than once, or need to sort much larger collections, but they'll only do the import once. (And for...
How is the default max Java heap size determined?
...rep -iE 'HeapSize|PermSize|ThreadStackSize'
What system configuration settings influence the default value?
The machine's physical memory & Java version.
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RegEx for Javascript to allow only alphanumeric
...mum of one character:
^\s*([0-9a-zA-Z]+)\s*$
Square brackets indicate a set of characters. ^ is start of input. $ is end of input (or newline, depending on your options). \s is whitespace.
The whitespace before and after is optional.
The parentheses are the grouping operator to allow you to ...
How can I create a table with borders in Android?
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How would I set the background of the view programmatically? view.setBackground(?)
– rasen58
Dec 27 '12 at 21:29
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Programmatically get the cache line size?
...ctories contains the following files:
coherency_line_size
level
number_of_sets
physical_line_partition
shared_cpu_list
shared_cpu_map
size
type
ways_of_associativity
This gives you more information about the cache then you'd ever hope to know, including the cacheline size (coherency_line_size) as...