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What is move semantics?
...the compiler chooses between the copy constructor and the move constructor based on whether the argument to the assignment operator is an lvalue or an rvalue.
So if you say a = b, the copy constructor will initialize that (because the expression b is an lvalue), and the assignment operator swaps th...
Moving from CVS to Git: $Id$ equivalent?
...t hook and changed my script to be able to automatically update itself.
I base the version off of the number of commits done. This is a slight race condition because two people could commit at the same time and both think they are committing the same version number, but we don't have many developer...
how does array[100] = {0} set the entire array to 0?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?
...eRecord has little to do with Rails and everything to do with whatever database you're using.
Using MySQL as an example (if for no other reason because it's most popular), you have DATE, DATETIME, TIME and TIMESTAMP column data types; just as you have CHAR, VARCHAR, FLOAT and INTEGER.
So, you ask,...
When should I choose Vector in Scala?
...t your algorithm is doing.
List is a singly linked list, while Vector is a base-32 integer trie, i.e. it is a kind of search tree with nodes of degree 32.
Using this structure, Vector can provide most common operations reasonably fast, i.e. in O(log_32(n)). That works for prepend, append, update, ra...
Matplotlib discrete colorbar
...orbar
ax2 = fig.add_axes([0.95, 0.1, 0.03, 0.8])
cb = plt.colorbar.ColorbarBase(ax2, cmap=cmap, norm=norm,
spacing='proportional', ticks=bounds, boundaries=bounds, format='%1i')
ax.set_title('Well defined discrete colors')
ax2.set_ylabel('Very custom cbar [-]', size=12)
I personally think t...
Highlight a word with jQuery
...ated" version of the original script.
/*
* jQuery Highlight plugin
*
* Based on highlight v3 by Johann Burkard
* http://johannburkard.de/blog/programming/javascript/highlight-javascript-text-higlighting-jquery-plugin.html
*
* Code a little bit refactored and cleaned (in my humble opinion).
*...
Passing an Array as Arguments, not an Array, in PHP
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to map a composite key with JPA and Hibernate?
...y. Composite
primary keys typically arise when
mapping from legacy databases when the
database key is comprised of several
columns. The EmbeddedId and
IdClass annotations are used to
denote composite primary keys. See
sections 9.1.14 and 9.1.15.
...
The following rules apply ...
Trigger change() event when setting 's value with val() function
... $('#secondaryInput').show();
}
});
Then I take the value from the database (this is used on a form for both new input and editing existing records), set it as the selected value, and add the piece I was missing to trigger the above code, ".change()".
$('#selectField').val(valueFromDatabase).ch...