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MySQL foreign key constraints, cascade delete
... Drew
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answered May 26 '10 at 22:45
Marc BMarc B
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Can I run javascript before the whole page is loaded?
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Simple explanation of clojure protocols
...uld like Clojure to run on (JVM, CLI, ECMAScript, Objective-C) has specialized high-performance support for dispatching solely on the type of the first argument. Clojure Multimethods OTOH dispatch on arbitrary properties of all arguments.
So, Protocols restrict you to dispatch only on the first arg...
What is the difference between related SQLite data-types like INT, INTEGER, SMALLINT and TINYINT?
...ofrei
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answered May 3 '10 at 22:13
J. PolferJ. Polfer
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Why use symbols as hash keys in Ruby?
...o-generated ones). In that case you should evaluate how this affects the size of your Ruby interpreter.
Notes:
If you do string comparisons, Ruby can compare symbols just by their object ids, without having to evaluate them. That's much faster than comparing strings, which need to be evaluated.
I...
How can I pass selected row to commandLink inside dataTable or ui:repeat?
...;Item>(items);
}
return model;
}
(making it transient and lazily instantiating it in the getter is mandatory when you're using this on a view or session scoped bean since DataModel doesn't implement Serializable)
Then you'll be able to access the current row by DataModel#getRowData() ...
Current time in microseconds in java
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Shadoninja
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answered Nov 11 '09 at 0:28
AlBlueAlBlue
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what's the difference between “hadoop fs” shell commands and “hdfs dfs” shell commands?
...s the recommended command instead of hadoop dfs
below is the list categorized as hdfs commands.
namenode|secondarynamenode|datanode|dfs|dfsadmin|fsck|balancer|fetchdt|oiv|dfsgroups
So even if you use hadoop dfs , it will look locate hdfs and delegate that command to hdfs dfs
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How to check if a variable is a dictionary in Python?
...euron
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answered Aug 10 '14 at 19:04
Padraic CunninghamPadraic Cunningham
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What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
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