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Do I need elements in persistence.xml?
...e Java EE 5 tutorial:
<persistence>
<persistence-unit name="OrderManagement">
<description>This unit manages orders and customers.
It does not rely on any vendor-specific features and can
therefore be deployed to any persistence provider.
...
Git: How to rebase to a specific commit?
...you don't need this. Note that you must have specified <Upstream> in order to specify <Branch> or git will think you are specifying <Upstream>.
<Target> is the commit we will attach our string of commits to. When providing a branch name, you are simply specifying the head co...
How can I select an element with multiple classes in jQuery?
...t write the selectors together without spaces in between:
$('.a.b')
The order is not relevant, so you can also swap the classes:
$('.b.a')
So to match a div element that has an ID of a with classes b and c, you would write:
$('div#a.b.c')
(In practice, you most likely don't need to get that...
In Ruby, is there an Array method that combines 'select' and 'map'?
...ns as its eager version. It doesn't speed anything up, it just changes the order of execution of each iteration—the last function in the chain "pulls" values as needed from the previous functions in reverse order.
– pje
Feb 13 '18 at 17:15
...
What's the purpose of the LEA instruction?
...
@FrankH.: out-of-order CPUs typically run LEA on ALUs, while some in-order CPUs (like Atom) sometimes run it on an AGUs (because they can't be busy handling a memory access).
– Peter Cordes
Dec 3 '15 at ...
Why can't I use background image and color together?
...aph-paper with light blue tint, if you had the png. Note that the stacking order might work in reverse to your mental model, with the first item being on top.
Excellent documentation by Mozilla, here:
https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Using_multiple_backgrounds
Tool for build...
How to set environment variable or system property in spring tests?
...u have definitions via @TestPropertySource or a similar method - the exact order in which properties are loaded can be found in the Spring documentation chapter 24. Externalized Configuration.
share
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How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?
... example). Even if your values are hashable, since sets are semantically unordered, the behavior is undefined in regards to precedence. So don't do this:
>>> c = dict(a.items() | b.items())
This example demonstrates what happens when values are unhashable:
>>> x = {'a': []}
>&g...
'UserControl' constructor with parameters in C#
...s Designer forces you to provide a parameterless constuctor on controls in order to work properly. Actually, it only requires a parameterless constructor in order to instantiate controls, but not to design them (the designer will actually parse the InitializeComponent method while designing a contro...
How to use Git?
... your questions directly rather than pointing you at documentation:
1) In order to keep it up to date, do a git pull and that will pull down the latest changes in the repository, on the branch that you're currently using (which is generally master)
2) I don't think there's something (widely availa...