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Deleting an object in java?
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If you want help an object go away, set its reference to null.
String x = "sadfasdfasd";
// do stuff
x = null;
Setting reference to null will make it more likely that the object will be garbage collected, as long as there are no other references to the object.
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This Row already belongs to another table error when trying to add rows?
...lumn("ID", typeof(int));
DataColumn dcName = new DataColumn("Name", typeof(string));
dtSpecificOrders.Columns.Add(dtID);
dtSpecificOrders.Columns.Add(dcName);
DataRow[] orderRows = dt.Select("CustomerID = 2");
foreach (DataRow dr in orderRows)
{
DataRow myRow = dtSpecificOrders.NewRow(); // &...
Rails ActiveRecord date between
...f_day..@selected_date.end_of_day)
Or, if you want to or have to use pure string conditions, you can do:
Comment.where('created_at BETWEEN ? AND ?', @selected_date.beginning_of_day, @selected_date.end_of_day)
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Windows can't find the file on subprocess.call()
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@nueverest Only when the the command string is constructed from external input
– Jirka
Jul 22 '16 at 16:59
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Get the current fragment object
...r.onAttachFragment(fragment);
Toast.makeText(getApplicationContext(), String.valueOf(fragment.getId()), Toast.LENGTH_SHORT).show();
}
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fol...
Error 1046 No database Selected, how to resolve?
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one more note - make sure that the jdbc connection string contains the schema name and that schema is created already.
– Gaurav
Sep 3 at 21:16
add a co...
What is the best way to implement a “timer”? [duplicate]
...name you want to run in the application.
protected override void OnStart(string[] args)
{
// It tells in what interval the service will run each time.
Int32 timeInterval = Int32.Parse(Constants.TimeIntervalValue) * 60 * 60 * 1000;
base.OnStart(args);
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Replace new lines with a comma delimiter with Notepad++?
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Here's what worked for me with a similar list of strings in Notepad++ without any macros or anything else:
Click Edit -> Blank Operations -> EOL to space
[All the items should now be in a single line separated by a 'space']
Select any 'space' and do a Replace All (b...
Create a List of primitive int?
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No you can't. You can only create List of reference types, like Integer, String, or your custom type.
It seems I can do List myList = new ArrayList(); and add "int" into this list.
When you add int to this list, it is automatically boxed to Integer wrapper type. But it is a bad idea to use r...
jQuery Mobile: document ready vs. page events
...ata.toPage,
from = data.options.fromPage;
if (typeof to === 'string') {
var u = $.mobile.path.parseUrl(to);
to = u.hash || '#' + u.pathname.substring(1);
if (from) from = '#' + from.attr('id');
if (from === '#index' && to === '#second') {
...