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Django ModelForm: What is save(commit=False) used for?
...nal commit keyword argument,
which accepts either True or False. If you call save() with commit=False,
then it will return an object that hasn't yet been saved to the database.
In this case, it's up to you to call save() on the resulting model instance.
This is useful if you want to d...
How to create and handle composite primary key in JPA
...contains your two keys, and then have a reference to that class as EmbeddedId in your Entity.
You would need the @EmbeddedId and @Embeddable annotations.
@Entity
public class YourEntity {
@EmbeddedId
private MyKey myKey;
@Column(name = "ColumnA")
private String columnA;
/** Y...
How to change colors of a Drawable in Android?
...5.0+). Tinting isn't even available in AppCompat, so we're stuck having to call setColorFilter every time we use the icons instead of having selectors with different color tints. Still, it's a much better solution than editing pngs directly and having extra static assets.
– Chr...
Why isn't my JavaScript working in JSFiddle?
...code/html/style sheets. you'd need to reference the frame in the function call, but there isn't really an easy way to do that since the frame doesn't have a name. It's really a problem because of the way jsfiddle works, but it's still a good idea to keep your javascript completely separate.
...
SQL query to find record with ID not in another table
...
Try this
SELECT ID, Name
FROM Table1
WHERE ID NOT IN (SELECT ID FROM Table2)
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How do I pass command-line arguments to a WinForms application?
... = "/lol"; args[3] = "nisp"; What could be easier?
– Callum Rogers
Jul 24 '09 at 19:22
cant believe i saw that 'string...
What characters are allowed in DOM IDs? [duplicate]
... is a difference between HTML and XHTML.
As XHTML is XML the rules for XML IDs apply:
Values of type ID MUST match the Name production.
NameStartChar ::= ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] |
[#xD8-#xF6] | [#xF8-#x2FF] |
[#x370-#x37D] | [#x...
History or log of commands executed in Git
...
Type history in your terminal.
It's not technically git, but I think it is what you want.
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How can foreign key constraints be temporarily disabled using T-SQL?
...eed to drop the constraints. Otherwise, use DELETE FROM, but take into consideration the difference: mssqltips.com/sqlservertip/1080/…
– James McCormack
Dec 10 '12 at 11:12
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How to inspect the return value of a function in GDB?
...ceptions to this are functions returning types larger than 32 bits, specifically 64-bit integers (long long), doubles, and structs or classes.
The other exception is if you're not running on an Intel architecture. In that case, you'll have to figure out which register is used, if any.
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