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When are you truly forced to use UUID as part of the design?
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@Chamnap I wrote UUIDTools. UUIDs can be converted to an integer or their raw byte form, and would be substantially smaller as a binary.
– Bob Aman
Jun 10 '12 at 14:21
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How Pony (ORM) does its tricks?
Pony ORM does the nice trick of converting a generator expression into SQL. Example:
1 Answer
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How to properly compare two Integers in Java?
...r are both of numeric type, or
one is of numeric type and the other
is convertible (§5.1.8) to numeric
type, binary numeric promotion is
performed on the operands (§5.6.2).
and for <, <=, > and >= (JLS 15.20.1)
The type of each of the operands of a
numerical comparison ...
PreparedStatement IN clause alternatives?
...eter count is known, run:
sql = any( sql, count );
For example:
/**
* Converts a SQL statement containing exactly one IN clause to an IN clause
* using multiple comma-delimited parameters.
*
* @param sql The SQL statement string with one IN clause.
* @param params The number of parameters t...
Equivalent of varchar(max) in MySQL?
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Mysql Converting column from VARCHAR to TEXT when under limit size!!!
mysql> CREATE TABLE varchars1(ch3 varchar(6),ch1 varchar(3),ch varchar(4000000))
;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> SHOW WARNINGS;...
NodeJS: Saving a base64-encoded image to disk
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I think you are converting the data a bit more than you need to. Once you create the buffer with the proper encoding, you just need to write the buffer to the file.
var base64Data = req.rawBody.replace(/^data:image\/png;base64,/, "");
requ...
`levels
...The code is simply setting up a sort of pipeline:
Start with dat$product
Convert it to a factor
Change the levels
Store that in res
Personally, I think that line of code is beautiful ;)
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Difference between float and decimal data type
...nversion functions would often create tons of minute differences in values converted from ASCII to float when compared against those in, say, SQLServer. This is rarely true anymore. Testing is the best policy, as it's best to know for certain what the trade-offs are.
– user1899...
How do I Sort a Multidimensional Array in PHP [duplicate]
...ompared in a "dumb" manner (e.g. date strings) you can also specify how to convert these items to a value that can be directly compared (e.g. a DateTime instance).
It's associative if you want: this code takes care of sorting items, but you select the actual sort function (usort or uasort).
Finally,...
Is < faster than
...was faster than <= for simple integer types, the compiler should always convert <= to < for constants. Any compiler that didn't would just be a bad compiler (for that platform).
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