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What is the difference between gsub and sub methods for Ruby Strings
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I agree with you that it is not obvious! Java calls these replace and replaceAll. But Ruby has its roots in Perl which uses the g modifier. It's just one of those things.
– Ray Toal
Jul 21 '11 at 0:27
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jquery how to empty input field
...nput type="number" min="0' max="10" value="5"></input>? I guess said differently, are you allowed to set a numeric input to be blank?
– Kevin Wheeler
Jun 10 '15 at 21:49
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MySQL get row position in ORDER BY
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Use this:
SELECT x.id,
x.position,
x.name
FROM (SELECT t.id,
t.name,
@rownum := @rownum + 1 AS position
FROM TABLE t
JOIN (SELECT @rownum := 0) r
ORDER BY t.name) x
WHERE...
MongoDB - Update objects in a document's array (nested updating)
...o use the positional "$" operator. Something like:
db.bar.update( {user_id : 123456 , "items.item_name" : "my_item_two" } ,
{$inc : {"items.$.price" : 1} } ,
false ,
true);
Note that this will only increment the first matched subdocument in any...
Using Razor, how do I render a Boolean to a JavaScript variable?
... eg: var model = @Html.Raw(Json.Encode(Model)); and then you can just call model.IsFollowing (Sorry I don't know how to format the comment code properly)
– Jynn
Apr 13 '17 at 9:06
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Coalesce function for PHP?
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Putting func_get_args() inside the foreach (here as $arg) won't change anything from a performance point of view.
– Savageman
Dec 12 '09 at 1:47
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How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
...y('total')
Transaction.objects.all().values('actor').annotate(total=Count('id')).order_by('total')
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Could not load file or assembly Microsoft.SqlServer.management.sdk.sfc version 11.0.0.0
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Solution: just go to http://www.microsoft.com/en-us/download/details.aspx?id=42295 and download:
ENU\x64\SharedManagementObjects.msi for X64 OS or
ENU\x86\SharedManagementObjects.msi for X86 OS,
then install it, and restart visual studio.
PS: You may need install DB2OLEDBV5_x64.msi or DB2OL...
Flatten List in LINQ
...e expected the language designers to come up with a shortcut syntax specifically for lists of lists
– Andy
Feb 9 '17 at 12:15
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What does a double * (splat) operator do
...lues)
options = values.extract_options!
# ...
end
This method can be called like this: cycle("red", "green", "blue", name: "colors").
This is quite a common pattern: You accept a list of arguments and the last one is an options hash, which can be extract - for example - using ActiveSupport's ...