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Is there a __CLASS__ macro in C++?
...re's a basic example:
Example
#include <boost/type_index.hpp>
class foo_bar
{
int whatever;
};
namespace bti = boost::typeindex;
template <typename T>
void from_type(T t)
{
std::cout << "\tT = " << bti::type_id_with_cvr<T>().pretty_name() << "\n";
}
i...
SQL Server Linked Server Example Query
...ted Mar 5 at 1:18
Frederick The Fool
29.6k2020 gold badges7373 silver badges111111 bronze badges
answered Nov 3 '10 at 21:47
...
How do I check if a variable exists in a list in BASH
...iginal string with a space and check against a regex with [[ ]]
haystack='foo bar'
needle='bar'
if [[ " $haystack " =~ .*\ $needle\ .* ]]; then
...
fi
this will not be false positive on values with values containing the needle as a substring, e.g. with a haystack foo barbaz.
(The concept is...
Add an element to an array in Swift
...he way Apple implemented this is kind of irritating. Presumably, anArray+="Foo" does the same thing as anArray+=["Foo"] Personally, I'll only be using the latter syntax to avoid confusing myself.
– original_username
Jul 7 '14 at 5:56
...
What's the difference between String(value) vs value.toString()
...the object passed, for example:
var o = { toString: function () { return "foo"; } };
String(o); // "foo"
On the other hand, if an identifier refers to null or undefined, you can't use the toString method, it will give you a TypeError exception:
var value = null;
String(null); // "null"
value...
How can I start an interactive console for Perl?
...:
> gmtime(2**30)
gmtime(2**30) = Sat Jan 10 13:37:04 2004
> $x = 'foo'
$x = 'foo' = foo
> $x =~ s/o/a/g
$x =~ s/o/a/g = 2
> $x
$x = faa
share
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improve this answer
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How to use a variable inside a regular expression?
...
How to write quantifiers in f-strings: fr"foo{{1,5}}" (double the braces)
– PunchyRascal
Mar 19 at 18:28
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Get the latest record from mongodb collection
...
This is how to get the last record from all MongoDB documents from the "foo" collection.(change foo,x,y.. etc.)
db.foo.aggregate([{$sort:{ x : 1, date : 1 } },{$group: { _id: "$x" ,y: {$last:"$y"},yz: {$last:"$yz"},date: { $last : "$date" }}} ],{ allowDiskUse:true })
you can add or remove f...
Android preferences onclick event
...on="android.intent.action.MAIN"
android:targetPackage="com.example.foo"
android:targetClass="com.example.foo.SomeActivity"
/>
</PreferenceScreen>
you can also use "android:mimetype" to set the mimetype.
...
How do I access properties of a javascript object if I don't know the names?
...ect.keys and Array#forEach which makes this a little easier:
var data = { foo: 'bar', baz: 'quux' };
Object.keys(data); // ['foo', 'baz']
Object.keys(data).map(function(key){ return data[key] }) // ['bar', 'quux']
Object.keys(data).forEach(function (key) {
// do something with data[key]
});
ES...