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Can a C++ enum class have methods?
...();
And the compiler will prevent things like:
Fruit f = 1; // Compile time error.
You could easily add methods such that:
Fruit f("Apple");
and
f.ToString();
can be supported.
share
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i...
Useful code which uses reduce()? [closed]
... Doing some benchmarks, the 'ugly' way is faster for large lists. timeit.repeat('int("".join(map(str, digit_list)))', setup = 'digit_list = list(d%10 for d in xrange(1,1000))', number=1000) takes ~0.09 seconds while timeit.repeat('reduce(lambda a,d: 10*a+d, digit_list)', setup = 'digit_list...
std::string formatting like sprintf
...s ... ) + 1; // Extra space for '\0'
if( size <= 0 ){ throw std::runtime_error( "Error during formatting." ); }
std::unique_ptr<char[]> buf( new char[ size ] );
snprintf( buf.get(), size, format.c_str(), args ... );
return std::string( buf.get(), buf.get() + size - 1 ); // ...
Appending to an existing string
...notes.where(:author_id => a).first presumably returns a new object each time, which will have its own independent string.
– sepp2k
Dec 21 '12 at 11:44
...
Timeout on a function call
... are running on UNIX:
In [1]: import signal
# Register an handler for the timeout
In [2]: def handler(signum, frame):
...: print("Forever is over!")
...: raise Exception("end of time")
...:
# This function *may* run for an indetermined time...
In [3]: def loop_forever():
...: ...
Set cursor position on contentEditable
...v is to move the caret/cursor to the beginning of the text in the div each time you click on it, which is undesirable.
8 An...
Set focus on TextBox in WPF from view model
...h Focus is... debugging .Net source code. No kidding. It saved me a lot of time many times. To enable .net source code debugging refer to Shawn Bruke's blog.
Finally, general approach that I use to set focus from ViewModel is Attached Properties. I wrote very simple attached property, which can be s...
Numpy first occurrence of value greater than existing value
...ve another list.
In [2]: N = 10000
In [3]: aa = np.arange(-N,N)
In [4]: timeit np.argmax(aa>N/2)
100000 loops, best of 3: 52.3 us per loop
In [5]: timeit np.where(aa>N/2)[0][0]
10000 loops, best of 3: 141 us per loop
In [6]: timeit np.nonzero(aa>N/2)[0][0]
10000 loops, best of 3: 142 u...
Get size of all tables in database
...
If your tables are partitioned, they show up multiple times without any indication of what is going on. You can either add p.partition_number to the select list or you can SUM(p.Rows) and remove it from the group by.
– PRMan
Apr 22 '14 at ...
Java: Get month Integer from Date
...
java.time (Java 8)
You can also use the java.time package in Java 8 and convert your java.util.Date object to a java.time.LocalDate object and then just use the getMonthValue() method.
Date date = new Date();
LocalDate localDate...