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What is the difference between pluck and collect in Rails?
...ds with Rails 4, still use pluck
if you need some fields with Rails 3, use selectand collect
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LINQ to Entities case sensitive comparison
...om c In db.Users Where c.Username = UserName AndAlso c.Password = Password Select c).SingleOrDefault()
If oUser IsNot Nothing Then
If oUser.Password = Password Then
bLogin = True
End If
End If
Basically, first checking if there is a user with required criteria, ...
How can I convince IE to simply display application/json rather than offer to download it?
... Notepad.
To do this, create or find a .json file, right mouse click, and select "Open With" or "Choose Default Program."
This might come in handy if you by chance want to use Internet Explorer but your IT company wont let you edit your registry. Otherwise, I recommend the above answers.
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Rails: how do I validate that something is a boolean?
...age: validates :field, inclusion: { in: [ true, false ], message: "Please, select one!" }
– tagaism
Mar 23 '18 at 9:28
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How to output only captured groups with sed?
...only alternative solution is to use a character class: '[[:digit:]]`.
The selected answer use such "character classes" to build a solution:
$ str='This is a sample 123 text and some 987 numbers'
$ echo "$str" | sed -rn 's/[^[:digit:]]*([[:digit:]]+)[^[:digit:]]+([[:digit:]]+)[^[:digit:]]*/\1 \2/p'...
How do you query for “is not null” in Mongo?
..., the query returns only the documents that do not contain the field.
$ne selects the documents where the value of the field is not equal to the specified value. This includes documents that do not contain the field.
So in your provided case following query going to return all the documents with i...
Stacked Tabs in Bootstrap 3
...but it doesn't look like a tab (appropriate left, right borders) when it's selected/active. That's the purpose of tabs.
– Zim
Mar 1 '14 at 11:42
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Reading 64bit Registry from a 32bit application
...ubKey(registryKey);
if (key != null)
{
var list = key.GetSubKeyNames().Select(keyName => key.OpenSubKey(keyName).GetValue("DisplayName")).ToList();
key.Close();
}
For 32 registers is:
registryKey = @"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall";
key = Registry.Loca...
Is a LINQ statement faster than a 'foreach' loop?
...ter than a flat foreach, but most likely you wouldn't have done a blanket "select * from foo" anyway, so that isn't necessarily a fair comparison.
Re PLINQ; parallelism may reduce the elapsed time, but the total CPU time will usually increase a little due to the overheads of thread management etc.
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How do you get current active/default Environment profile programmatically in Spring?
...ar functionality using the annotation @Profile("local") Profiles allow for selective configuration based on a passed-in or environment parameter. Here is more information on this technique: Spring Profiles
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