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Hibernate: hbm2ddl.auto=update in production?
...erstand when datatypes for columns have changed. Examples (using MySQL):
String with @Column(length=50) ==> varchar(50)
changed to
String with @Column(length=100) ==> still varchar(50), not changed to varchar(100)
@Temporal(TemporalType.TIMESTAMP,TIME,DATE) will not update the DB columns i...
How do you clear the SQL Server transaction log?
...
Making a log file smaller should really be reserved for scenarios where it encountered unexpected growth which you do not expect to happen again. If the log file will grow to the same size again, not very much is accomplished by shrinking it tem...
Why doesn't java.lang.Number implement Comparable? [duplicate]
...programmers could override. This is no excuse. The same problem exists for Strings when it comes to empty strings or null references. Is a null reference greater than or less than the string "foo"? Sun picked an ordering that makes sense.
– Jason
Dec 2 '15 at 1...
How to disable/enable the sleep mode programmatically in iOS?
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Thanks for this information. It will come in handy. I was wondering if disabling sleep mode in one app will affect the entire device. Like if I disable it in my app and then exit the app, will it still be disabled after the app exits? Do I need to check whether it's a...
Dilemma: when to use Fragments vs Activities:
.... In the beginning this will not have any sense, but in time, you will actually be able to tell if you need Fragment or not.
There is a good practice I found very helpful for me. It occurred to me while I was trying to explain something to my daughter.
Namely, imagine a box which represents a sc...
using awk with column value conditions
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If you're looking for a particular string, put quotes around it:
awk '$1 == "findtext" {print $3}'
Otherwise, awk will assume it's a variable name.
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How to remove specific value from array using jQuery
...item, not removing an item from the array. Those aren't the same thing at all.
– James Moore
Dec 1 '12 at 1:14
5
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Group by in LINQ
...Collections.Generic;
class Person
{
public int PersonId;
public string car ;
}
class Result
{
public int PersonId;
public List<string> Cars;
}
public class Program
{
public static void Main()
{
List<Person> persons = new List<Person>()
...
Regular expression to check if password is “8 characters including 1 uppercase letter, 1 special cha
...ng one uppercase letter: You can use the [A-Z]+ regular expression. If the string contains at least one upper case letter, this regular expression will yield true.
One special character: You can use either the \W which will match any character which is not a letter or a number or else, you can use s...
Eclipse/Java code completion not working
...o previously suffering from Eclipse thinking my project was in 1.5 despite all options saying otherwise, so it must have been corrupted during this issue.
– Philip Guin
Jun 30 '13 at 6:51
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