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Is the 'override' keyword just a check for a overridden virtual method?
...an otherwise silent error can be diagnosed:
struct Base
{
virtual int foo() const;
};
struct Derived : Base
{
virtual int foo() // whoops!
{
// ...
}
};
The above code compiles, but is not what you may have meant (note the missing const). If you said instead, virtual int...
Is there any way to post events to Google Analytics via server-side API? [closed]
... file_get_contents($sGaUrl);
}
sendAnalytics('UA-XXXXXXXX-1', 'http://foo.com', '/bar', 'Foo Bar');
Hope that helps!
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...
Converting strings to floats in a DataFrame
...
In [10]: df = DataFrame(dict(A = Series(['1.0','1']), B = Series(['1.0','foo'])))
In [11]: df
Out[11]:
A B
0 1.0 1.0
1 1 foo
In [12]: df.dtypes
Out[12]:
A object
B object
dtype: object
In [13]: df.convert_objects(convert_numeric=True)
Out[13]:
A B
0 1 1
1 1 NaN
...
Matlab: Running an m-file from command-line
...bash
matlab -nodisplay -nojvm -nosplash -nodesktop -r \
"try, run('/foo/bar/my_script.m'), catch, exit(1), end, exit(0);"
echo "matlab exit code: $?"
it prints matlab exit code: 1 if the script throws an exception, matlab exit code: 0 otherwise.
...
Spring JPA @Query with LIKE
... You can just do like :username and then .setParameter("username", "%foo%");
– Matthew Daumen
May 16 '19 at 19:30
...
How to watch for array changes?
...;
x.splice(1, 2, "x");
console.log("setting index 2...");
x[2] = "foo";
console.log("setting length to 10...");
x.length = 10;
console.log("updated array: %o", x.slice());
console.log("setting length to 2...");
x.length = 2;
console.log("extracting first element via ...
JSON Array iteration in Android/Java
...ill make all instances of JSONArray iterable, meaning that the for (Object foo : bar) syntax will now work with it (note that foo has to be an Object, because JSONArrays do not have a declared type). All this works because the JSONArray class is backed by a simple ArrayList, which is already iterabl...
Is it better in C++ to pass by value or pass by constant reference?
...pass-by-reference the compiler cannot assume that always. Simple example:
foo * f;
void bar(foo g) {
g.i = 10;
f->i = 2;
g.i += 5;
}
the compiler can optimize it into
g.i = 15;
f->i = 2;
since it knows that f and g doesn't share the same location. if g was a reference (foo &...
Using custom std::set comparator
... typedef std::set< T, ftor > t;
};
// usage
bool my_comparison( foo const &l, foo const &r );
set_funcomp< foo, my_comparison >::t boo; // just the way you want it!
Wow, I think that was worth the trouble!
...
SQLAlchemy: Creating vs. Reusing a Session
... db_session.close()
connection.close()
Usage:
from mymodels import Foo
with db_session("sqlite://") as db:
foos = db.query(Foo).all()
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