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How do I change the data type for a column in MySQL?
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Friendly reminder - The default for columns is NULLABLE, so if you have a NOT NULL column, don't forget to use "MODIFY columnname INTEGER NOT NULL" or else you will change your column from NOT NULL to NULL.
– Despertar
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How to implement onBackPressed() in Fragments?
...kPressed in the Activity. All the FragmentTransaction are addToBackStack before commit:
@Override
public void onBackPressed() {
int count = getSupportFragmentManager().getBackStackEntryCount();
if (count == 0) {
super.onBackPressed();
//additional code
} else {
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How to iterate over a JSONObject?
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@Tom For-Each loops are useful when iterating over a collection: for (String key : keys)
– caligari
Jun 15 '15 at 6:58
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How to remove constraints from my MySQL table?
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Mysql has a special syntax for dropping foreign key constraints:
ALTER TABLE tbl_magazine_issue
DROP FOREIGN KEY FK_tbl_magazine_issue_mst_users
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How do I implement basic “Long Polling”?
I can find lots of information on how Long Polling works (For example, this , and this ), but no simple examples of how to implement this in code.
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Autocomplete applying value not label to textbox
...revent this from occurring. I would also recommend doing something similar for the focus event to prevent ui.item.value from being placed in the input as the user hovers over choices:
$("#customer-search").autocomplete({
/* snip */
select: function(event, ui) {
event.preventDefault(...
Entity framework self referencing loop detected [duplicate]
...rver. I've already created the database and set up the correct primary and foreign keys and relationships.
13 Answers
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Calculating sum of repeated elements in AngularJS ng-repeat
The script below displays a shop cart using ng-repeat . For each element in the array, it shows the item name, its amount and the subtotal ( product.price * product.quantity ).
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java.lang.OutOfMemoryError: bitmap size exceeds VM budget - Android
...callbacks when your application redraws -- but again, there's not enough information here to say for sure.
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How do you serialize a model instance in Django?
... [0] at the end of your last line, like @DavorLucic suggested? And no need for trailing comma in your list literal (for the love of PEP8 ;).
– hobs
Oct 29 '14 at 18:16
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