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Hibernate: Automatically creating/updating the db tables based on entity classes
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how can I make hibernate to create tables only if they didn't exists?
– Aman Nagarkoti
Feb 16 '17 at 4:17
add a comment
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Count lines of code in all java classes in Android Studio
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Go to
https://plugins.jetbrains.com/idea/plugin/4509-statistic
and install the latest version
To install
Run Android Studio
From the menu bar, select File-->Settings
Under IDE Settings, click Plugins, and then click Install plugin from disk
Navigate to th...
c# open a new form then close the current form?
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Steve's solution does not work. When calling this.Close(), current form is disposed together with form2. Therefore you need to hide it and set form2.Closed event to call this.Close().
private void OnButton1Click(object sender, EventArgs e)
{
this.Hide();
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What's the difference between a Python module and a Python package?
...hon module which can contain submodules or recursively, subpackages. Technically, a package is a Python module with an __path__ attribute.
– Martijn Pieters♦
Apr 23 '18 at 21:50
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Django - “no module named django.core.management”
... the folder "/usr/lib/python2.6/site-packages" and see if there's a folder called django inside.
– RaviU
Dec 23 '12 at 19:10
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Why are Standard iterator ranges [begin, end) instead of [begin, end]?
...you have any sort of algorithm that deals with multiple nested or iterated calls to range-based constructions, which chain naturally. By contrast, using a doubly-closed range would incur off-by-ones and extremely unpleasant and noisy code. For example, consider a partition [n0, n1)[n1, n2)[n2,n3). A...
What it the significance of the Javascript constructor property?
...this.superclass = superClass.prototype;
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};
this new f() would not call the constructor of superClass,so when you create a subClass,maybe you need call the superClass at first,like this:
SubClass = function() {
SubClass.superClass.constructor.call(this);
};
so the constructor propert...
Pick a random value from an enum?
... only thing I would suggest is caching the result of values() because each call copies an array. Also, don't create a Random every time. Keep one. Other than that what you're doing is fine. So:
public enum Letter {
A,
B,
C,
//...
private static final List<Letter> VALUES =
Colle...
What is the difference between a var and val definition in Scala?
... need to worry whether you have to make a copy of your queue or not before calling toNum. Naturally, I avoided reusing variables for other purposes, and no code outside this function sees them, so I don't need to worry about their values changing from one line to the next -- except when I explicitly...
Duplicating a MySQL table, indices, and data
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Expanding on this answer one could use a stored procedure:
CALL duplicate_table('tableName');
Which will result in a duplicate table called tableName_20181022235959 If called when
SELECT NOW();
results:
2018-10-22 23:59:59
Implementation
DELIMITER $$
CREATE PROCEDURE dupli...