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Rails: Using build with a has_one association in rails
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361
The build method signature is different for has_one and has_many associations.
class User &l...
Variable is accessed within inner class. Needs to be declared final
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133
If you don't want to make it final, you can always just make it a global variable.
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Testing the type of a DOM element in JavaScript
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edited Apr 11 '14 at 3:32
Jonathan Day
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answ...
How do you use variables in a simple PostgreSQL script?
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132
Complete answer is located in the official PostgreSQL documentation.
You can use new PG9.0 ano...
Android canvas draw rectangle
how to draw empty rectangle with etc. borderWidth=3 and borderColor=black and part within rectangle don't have content or color. Which function in Canvas to use
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What is Unicode, UTF-8, UTF-16?
...s: Arabic, Hebrew, most European scripts (most notably excluding Georgian)
3 bytes: BMP
4 bytes: All Unicode characters
UTF-16:
2 bytes: BMP
4 bytes: All Unicode characters
It's worth mentioning now that characters not in the BMP include ancient scripts, mathematical symbols, musical symbols, ...
Diff output from two programs without temporary files
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213
Use <(command) to pass one command's output to another program as if it were a file name. Bas...
What is the difference between persist() and merge() in JPA and Hibernate?
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axtavtaxtavt
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What does “exec sp_reset_connection” mean in Sql Server Profiler? [duplicate]
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3 Answers
3
Active
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Linux command to print directory structure in the form of a tree
...ree -d /proc/self/
/proc/self/
|-- attr
|-- cwd -> /proc
|-- fd
| `-- 3 -> /proc/15589/fd
|-- fdinfo
|-- net
| |-- dev_snmp6
| |-- netfilter
| |-- rpc
| | |-- auth.rpcsec.context
| | |-- auth.rpcsec.init
| | |-- auth.unix.gid
| | |-- auth.unix.ip
| | |-- nfs4.idtona...