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Favorite (Clever) Defensive Programming Best Practices [closed]
...gh to issue a warning if you don't handle some enums in a case block. But setting the default to fail is still good form - an enum is just a number and if you get memory corruption you can have an invalid value appear.
– Adam Hawes
Jan 29 '09 at 5:15
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Could not open a connection to your authentication agent
... ssh-agent instance running in the background, and an environment variable set that tells SSH which socket it should use to connect to the agent (SSH_AUTH_SOCK IIRC). If you just run ssh-agent then the agent will start, but SSH will have no idea where to find it.
– Vanessa Phip...
Java dynamic array sizes?
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You cannot use [ ... ] to index a list. You have to use the get(int) and set(int, E) methods.
An ArrayList is created with zero elements. You cannot simple create an ArrayList with 20 elements and then call set(15, foo).
You cannot directly change the size of an ArrayList. You do it indirectly u...
Call a stored procedure with parameter in c#
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@DylanChen: That depends on the database settings. The default setting is that identifiers are not case sensetive.
– Guffa
May 10 '16 at 8:37
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Show current assembly instruction in GDB
...ll display the disassembly of the next instruction.
GDB-7.0 also supports set disassemble-next-line on, which will disassemble the entire next line, and give you more of the disassembly context.
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Cast int to varchar
...Column x a varchar column with
where CAST(Column_name AS CHAR CHARACTER SET latin1 ) collate latin1_general_ci = varchar_column_name
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Evenly space multiple views within a container view
...s in interface builder. What you do is create 'spacer views' that you have set to match heights equally. Then add top and bottom constraints to the labels (see the screenshot).
More specifically, I have a top constraint on 'Spacer View 1' to superview with a height constraint of lower priority ...
Cartesian product of multiple arrays in JavaScript
... (theoretically slower), it's also harder to design so it handles infinite sets...
– ckozl
Sep 6 '12 at 21:32
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What are the benefits of functional programming? [closed]
...er is taking care of most of the operations which used to require manually setting up state variables (like the iterator in a loop).
Some performance benefits can be seen in the context of a single-processor as well, depending on the way the program is written, because most functional languages and...
Run a PostgreSQL .sql file using command line arguments
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You have four choices to supply a password:
Set the PGPASSWORD environment variable. For details see the manual: http://www.postgresql.org/docs/current/static/libpq-envars.html
Use a .pgpass file to store the password. For details see the manual: http://www.postgresql....