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Error 1022 - Can't write; duplicate key in table
...raints are currently in use you can use the following query:
SELECT `TABLE_SCHEMA`, `TABLE_NAME`
FROM `information_schema`.`KEY_COLUMN_USAGE`
WHERE `CONSTRAINT_NAME` IN ('iduser', 'idcategory');
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...
What happens to a detached thread when main() exits?
...), and that's well-defined, as long as it touches neither (automatic|thread_local) variables of other threads nor static objects.
This appears to be allowed to allow thread managers as static objects (note in [basic.start.term]/4 says as much, thanks to @dyp for the pointer).
Problems arise when t...
How to compile for Windows on Linux with gcc/g++?
...torial here at the Code::Blocks forum. Mind that the command changes to x86_64-w64-mingw32-gcc-win32, for example.
Ubuntu, for example, has MinGW in its repositories:
$ apt-cache search mingw
[...]
g++-mingw-w64 - GNU C++ compiler for MinGW-w64
gcc-mingw-w64 - GNU C compiler for MinGW-w64
mingw-w6...
Maven build failed: “Unable to locate the Javac Compiler in: jre or jdk issue”
I have my JAVA_HOME set to:
32 Answers
32
...
What do “branch”, “tag” and “trunk” mean in Subversion repositories?
...a development effort. It should never be named after a resource (like 'vonc_branch') but after:
a purpose 'myProject_dev' or 'myProject_Merge'
a release perimeter 'myProjetc1.0_dev'or myProject2.3_Merge' or 'myProject6..2_Patch1'...
Tag is a snapshot of files in order to easily get back to that s...
How does one unit test routes with Express?
... a more detailed example.
/// usercontroller.js
var UserController = {
_database: null,
setDatabase: function(db) { this._database = db; },
findUserByEmail: function(email, callback) {
this._database.collection('usercollection').findOne({ email: email }, callback);
}
};
module....
PHP function to get the subdomain of a URL
...
Here's a one line solution:
array_shift((explode('.', $_SERVER['HTTP_HOST'])));
Or using your example:
array_shift((explode('.', 'en.example.com')));
EDIT: Fixed "only variables should be passed by reference" by adding double parenthesis.
EDIT 2: Star...
Django migration strategy for renaming a model and relationship fields
...ration(migrations.Migration):
dependencies = [
('myapp', '0001_initial'),
]
operations = [
migrations.RenameModel('Foo', 'Bar'),
migrations.RenameField('AnotherModel', 'foo', 'bar'),
migrations.RenameField('YetAnotherModel', 'foo', 'bar')
]
You ma...
In JavaScript, why is “0” equal to false, but when tested by 'if' it is not false by itself?
... A friend of mine made f.cl.ly/items/3b0q1n0o1m142P1P340P/javascript_equality.html - the same graphs as above, but a bit easier to read.
– Lucy Bain
Dec 17 '14 at 22:50
...
Vibrate and Sound defaults on notification
... private static NotificationCompat.Builder buildNotificationCommon(Context _context, .....) {
NotificationCompat.Builder builder = new NotificationCompat.Builder(_context)
.setWhen(System.currentTimeMillis()).......;
//Vibration
builder.setVibrate(new long[] { 10...