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mongo group query how to keep fields
...e first matching entries for each group, you can try aggregating like:
db.test.aggregate({
$group: {
_id : '$name',
name : { $first: '$name' },
age : { $first: '$age' },
sex : { $first: '$sex' },
province : { $first: '$province' },
city : { $first: '$city' },
area : { $first:...
How to check for valid email address? [duplicate]
...ling it
from the "tokens" defined by the RFC. Each of these tokens is
tested in the accompanying unit test file.
you may need the pyDNS module for checking SMTP servers
pip install pyDNS
or from Ubuntu
apt-get install python3-dns
...
Bash conditionals: how to “and” expressions? (if [ ! -z $VAR && -e $VAR ])
I guess I'm not clear on how to do "and" tests. I wanted to make sure an argument existed which was working well with [ -e $VAR ] , but it turns out that was also evaluating as true on an empty string; which I do not want.
...
PHPDoc type hinting for array of objects?
...
Use:
/* @var $objs Test[] */
foreach ($objs as $obj) {
// Typehinting will occur after typing $obj->
}
when typehinting inline variables, and
class A {
/** @var Test[] */
private $items;
}
for class properties.
Previous ans...
ComboBox: Adding Text and Value to an Item (no Binding Source)
...t;
}
}
The following is a simple example of its usage:
private void Test()
{
ComboboxItem item = new ComboboxItem();
item.Text = "Item text1";
item.Value = 12;
comboBox1.Items.Add(item);
comboBox1.SelectedIndex = 0;
MessageBox.Show((comboBox1.SelectedItem as Combobo...
PostgreSQL: Difference between text and varchar (character varying)
...er varchar – because it has distinct name
The article does detailed testing to show that the performance of inserts and selects for all 4 data types are similar. It also takes a detailed look at alternate ways on constraining the length when needed. Function based constraints or domains provi...
$apply vs $digest in directive testing
...rticular attribute on the scope, and I want to change that attribute in my test and verify that it responds correctly, which is the best way of doing that change?
...
Check if a string is a date value
...he same on all platforms? In all locales? In the future?) or you can use a tested solution and use your time to improve it, not reinvent it. All of the libraries listed here are open source, free software.
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...
Mock vs MagicMock
...ault implementations of most of the magic methods.".
If you don't need to test any magic methods, Mock is adequate and doesn't bring a lot of extraneous things into your tests. If you need to test a lot of magic methods MagicMock will save you some time.
...
The current SynchronizationContext may not be used as a TaskScheduler
...de a SynchronizationContext. This is how I handle it:
[SetUp]
public void TestSetUp()
{
SynchronizationContext.SetSynchronizationContext(new SynchronizationContext());
}
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