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Which comment style should I use in batch files?
I've been writing some batch files, and I ran into this user guide , which has been quite informative. One thing it showed me was that lines can be commented not just with REM , but also with :: . It says:
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Setting Short Value Java
I am writing a little code in J2ME. I have a class with a method setTableId(Short tableId) . Now when I try to write setTableId(100) it gives compile time error. How can I set the short value without declaring another short variable?
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Add days to JavaScript Date
... edited Aug 20 at 15:32
Daniel A. White
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answered Feb 19 '09 at 0:10
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How can I change Mac OS's default Java VM returned from /usr/libexec/java_home
(Wasn't sure if this should go on SU... migration is certainly an option, but more programmers read questions here, so here goes).
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Difference between partition key, composite key and clustering key in Cassandra?
I have been reading articles around the net to understand the differences between the following key types. But it just seems hard for me to grasp. Examples will definitely help make understanding better.
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What is Normalisation (or Normalization)?
...base_normalization
I'll give a somewhat simplistic example.
Assume an organization's database that usually contains family members
id, name, address
214 Mr. Chris 123 Main St.
317 Mrs. Chris 123 Main St.
could be normalized as
id name familyID
214 Mr. Chris 27
317 Mrs. Chris 27
and a family...
Are soft deletes a good idea? [duplicate]
... of everything that has ever been and "delete" really only means "hide." Meaning, it's up to the situation.
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answered Mar 31 '10 at 1:25
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Difference between a theta join, equijoin and natural join
...are 12 rows = 3 x 4. Obviously, rows like "Laptop" with "wheels" have no meaning, this is why in practice the Cartesian product is rarely used.
| PNAME | PRICE | CNAME | COST |
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| Laptop | 1500 | CPU | 500 |
| Laptop | 1500 | hdd | 300 |...
Create a tar.xz in one command
I am trying to create a .tar.xz compressed archive in one command. What is the specific syntax for that?
5 Answers
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Build vs new in Rails 3
In the Rails 3 docs , the build method for associations is described as being the same as the new method, but with the automatic assignment of the foreign key. Straight from the docs:
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