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What is the most efficient way to create a dictionary of two pandas Dataframe columns?
... @WouterOvermeire this works in my application perfectly, thank you for your contribution
– user1083734
Jul 2 '13 at 14:35
3
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Is there a quicker / better way to clear the iPhone Simulator cache than deleting its directory?
...e all
Safe and effective.
See https://stackoverflow.com/a/26394597/218152 for single device
xcrun simctl erase [device ID]
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Does order of where clauses matter in SQL?
... strategies.
What does matter is whether or not you have a suitable index for this!
In the case of SQL Server, it will likely use an index if you have:
an index on (LastName, FirstName)
an index on (FirstName, LastName)
an index on just (LastName), or just (FirstName) (or both)
On the other ha...
What are Maven goals and phases and what is their difference?
...hich phases by default. The compile phase goals will always be executed before the test phase goals which will always be executed before the package phase goals and so on.
Part of the confusion is exacerbated by the fact that when you execute maven you can specify a goal or a phase. If you specif...
Accessing MVC's model property from Javascript
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For me this worked: var myModel = @{@Html.Raw(Json.Encode(Model));}
– hidden
Jan 7 '14 at 21:34
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Insert/Update Many to Many Entity Framework . How do I do it?
...lasses. Since your StudentClass table only contains the Ids and no extra information, EF does not generate an entity for the joining table. That is the correct behaviour and that's what you expect.
Now, when doing inserts or updates, try to think in terms of objects. E.g. if you want to insert a cl...
Adding additional data to select options using jQuery
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@ithcy All browsers support (and have for 10+ years) "invalid" attributes in the markup, and getting/setting these through the DOM. HTML5 "data" attributes are just custom attributes with a naming scheme and a new standard that declares them to be legal.
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$.ajax - dataType
...contentType is the HTTP header sent to the server, specifying a particular format.
Example: I'm sending JSON or XML
dataType is you telling jQuery what kind of response to expect.
Expecting JSON, or XML, or HTML, etc. The default is for jQuery to try and figure it out.
The $.ajax() documentation h...
'parent.relativePath' points at my com.mycompany:MyProject instead of org.apache:apache - Why?
...gt;
</parent>
Here is the relevant doc.
This feature is only for enhancing the development in a local checkout of that project. Set the value to an empty string in case you want to disable the feature and always resolve the parent POM from the repositories.
Default value is: ../pom.x...
Does MySQL ignore null values on unique constraints?
...SERT table1 VALUES (1);
INSERT table1 VALUES (1); -- Duplicate entry '1' for key 'x'
INSERT table1 VALUES (NULL);
INSERT table1 VALUES (NULL);
SELECT * FROM table1;
Result:
x
NULL
NULL
1
This is not true for all databases. SQL Server 2005 and older, for example, only allows a single NULL valu...