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When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
...inheritance hierarchies. It is unnecessary when casting upwards (towards a base class), but when casting downwards it can be used as long as it doesn't cast through virtual inheritance. It does not do checking, however, and it is undefined behavior to static_cast down a hierarchy to a type that isn'...
How to delete a file from SD card?
...id 4.4+. But the same code working for 4.3/
– hasnain_ahmad
Jul 18 '16 at 12:31
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Can an Android NFC phone act as an NFC tag?
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This is outdated. Android 4.4 has host-based card emulation, which allows precisely this: developer.android.com/guide/topics/connectivity/nfc/hce.html
– Trevor Johns
Jan 26 '14 at 18:42
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“find: paths must precede expression:” How do I specify a recursive search that also finds files in
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Why does MYSQL higher LIMIT offset slow the query down?
...next page. In other words, offset often needs to be calculated dynamically based on page and limit, instead of following a continuous pattern.
– Tom
Dec 28 '13 at 14:23
3
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Perl build, unit testing, code coverage: A complete working example
... 12 wallclock secs ( 0.00 cusr + 0.00 csys = 0.00 CPU)
cover
Reading database from D:/Documents and Settings/LeuchKW/workspace/HelloPerlBuildWorld/cover_db
----------------------------------- ------ ------ ------ ------ ------ ------
File stmt bran cond su...
ssl_error_rx_record_too_long and Apache SSL [closed]
...er trying to access one of my sites, and they keep getting this error > ssl_error_rx_record_too_long
15 Answers
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@UniqueConstraint and @Column(unique = true) in hibernate annotation
... Beware though that columnNames must be actual names in the database. It should be mask_id and group_id if you use default naming strategy.
– vitro
Jan 14 at 12:25
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Hide the cursor of an UITextField
...irst, store the text field's selected text range to an instance variable.
_textFieldSelectedTextRange = textField.selectedTextRange;
textField.selectedTextRange = nil; // hides caret
Then, when you want to unhide the caret, simply set the text field's selected text range back to what it was origi...
Backbone.js get and set nested object attribute
...del({
a: {b: 1, c: 2}
});
You can set the attribute "a.b" with:
var _a = _.omit(nestedAttrModel.get('a')); // from underscore.js
_a.b = 3;
nestedAttrModel.set('a', _a);
Now your model will have attributes like:
{a: {b: 3, c: 2}}
with the "change" event fired.
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