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How to override toString() properly in Java?
...stance, Eclipse can do so if you simply right-click on the source code and select Source > Generate toString
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JPA: what is the proper pattern for iterating over large result sets?
...essSession();
Query query = session
.createQuery("SELECT a FROM Address a WHERE .... ORDER BY a.id");
query.setFetchSize(Integer.valueOf(1000));
query.setReadOnly(true);
query.setLockMode("a", LockMode.NONE);
ScrollableResults results = query....
IF statement: how to leave cell blank if condition is false (“” does not work)
...ls in a column, I would recommend filtering on the column for blanks, then selecting the resulting cells and pressing Del. After which you can remove the filter.
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UIButton Long Press Event
...gPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
[self.button addGestureRecognizer:longPress];
[longPress release];
And then implement the method that handles the gesture
- (void)longPress:(UILongPressGestureRecognizer*)gesture {
if ( gesture.s...
Determine what attributes were changed in Rails after_save callback?
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The "selected" answer didn't work for me. I'm using rails 3.1 with CouchRest::Model (based on Active Model). The _changed? methods don't return true for changed attributes in the after_update hook, only in the before_update hook. ...
Why does ASP.NET webforms need the Runat=“Server” attribute?
... If a control is running at the server, does that mean you can't select the elements using Javascript? e.g. document.getElementsById("tvns:treeview");
– Ciaran Gallagher
Nov 22 '13 at 10:13
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Unique random string generation
...ncat(
Enumerable
.Repeat(0, int.MaxValue)
.Select(e => RandomByte())
.Where(randomByte => randomByte < outOfRange)
.Take(length)
.Select(randomByte => alphabet[randomByte % alphabet.Length])
);
}
byte RandomByte()
{...
Parsing huge logfiles in Node.js - read in line-by-line
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'line-by-line' is more memory efficient than the selected answer. For 1 million lines in a csv the selected answer had my node process in the low 800s of megabytes. Using 'line-by-line' it was consistently in the low 700s. This module also keeps the code clean and easy to r...
jQuery AJAX file upload PHP
...t type="file" onchange="saveFile(this)" >
<br><br>
Before selecting the file Open chrome console > network tab to see the request details.
<br><br>
<small>Because in this example we send request to https://stacksnippets.net/upload/image the response code will ...
Having both a Created and Last Updated timestamp columns in MySQL 4.0
...dated) values(null, null);
Query OK, 1 row affected (0.06 sec)
mysql> select * from test_table;
+----+---------------------+---------------------+
| id | stamp_created | stamp_updated |
+----+---------------------+---------------------+
| 2 | 2009-04-30 09:44:35 | 2009-04-30 09:4...