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Why can't I have abstract static methods in C#?
...{
}
If you call B.Test, like this:
class Program
{
static void Main(string[] args)
{
B.Test();
}
}
Then the actual code inside the Main method is as follows:
.entrypoint
.maxstack 8
L0000: nop
L0001: call void ConsoleApplication1.A::Test()
L0006: nop
L0007: ret
As you ...
Use of “this” keyword in formal parameters for static methods in C#
...above has a
"this" keyword before the first
parameter argument of type string.
This tells the compiler that this
particular Extension Method should be
added to objects of type "string".
Within the IsValidEmailAddress()
method implementation I can then
access all of the public
pro...
Convert Unix timestamp to a date string
Is there a quick, one-liner way to convert a Unix timestamp to a date from the Unix command line?
11 Answers
...
Objective-C Split()?
Is there any way to split strings in objective c into arrays? I mean like this - input string Yes:0:42:value into an array of (Yes,0,42,value)?
...
“Comparison method violates its general contract!”
...ent value when comparing objects. For example, you might want to perform a string compare and force empty strings to sort to the end with:
if ( one.length() == 0 ) {
return 1; // empty string sorts last
}
if ( two.length() == 0 ) {
return -1; // empty stri...
Uppercase or lowercase doctype?
...110, in XML it is production 28. In both cases it is declared as the fixed string "DOCTYPE" (which is not a tag, it is a keyword). So in the canonical definitions in the respective SGML and XML standards it is always uppercase. If you find software that permits a lowercase "doctype" that software is...
How do I display the current value of an Android Preference in the Preference summary?
...public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
Preference pref = findPreference(key);
if (pref instanceof ListPreference) {
ListPreference listPref = (ListPreference) pref;
pref.setSummary(listPref.getEntry());
}
}
This is easi...
Where IN clause in LINQ [duplicate]
...
this will compare string values, but what about ids??
– Jitendra Pancholi
Feb 22 '13 at 7:32
...
How can I convert spaces to tabs in Vim or Linux?
...k for all your text, not only spaces in the begin of the line. That mean a string like: "Hey,␣this␣␣␣␣is␣4␣spaces" will become "Hey,␣this⇥is␣4␣spaces", but its not! its a tab!.
To settle this little problem I recomend a search, instead of retab.
:%s/^\(^I*\)␣␣␣␣/\1^I/g
...
What is the ellipsis (…) for in this method signature?
...nside the method is as if it were an array:
public void PrintWithEllipsis(String...setOfStrings) {
for (String s : setOfStrings)
System.out.println(s);
}
This method can be called as following:
obj.PrintWithEllipsis(); // prints nothing
obj.PrintWithEllipsis("first"); // prints "firs...