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Postgres - FATAL: database files are incompatible with server
... accepting
connections on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432"?
Okay, lets take a look into server logs:
cat /usr/local/var/postgres/server.log
FATAL: database files are incompatible with server
DETAIL: The data directory was initialized by PostgreSQL version 9.2, which is not co...
best way to get the key of a key/value javascript object
...
What if I don’t wantfoo[i]to be"_proto_"?
– user2284570
May 29 '16 at 2:04
1
...
Is there a way to check if a file is in use?
...rvices;
internal static class Helper
{
const int ERROR_SHARING_VIOLATION = 32;
const int ERROR_LOCK_VIOLATION = 33;
private static bool IsFileLocked(Exception exception)
{
int errorCode = Marshal.GetHRForException(exception) & ((1 << 16) - 1);
return errorCode == ERROR_SHARING_VIO...
What should my Objective-C singleton look like? [closed]
...tly.
– Robbie Hanson
Apr 8 '09 at 4:32
33
This also is required because there could be subclasses...
How can I convert string date to NSDate?
... */
let date = dateFormatter.dateFromString(/* your_date_string */)
For further query, check NSDateFormatter and DateFormatter classes of Foundation framework for Objective-C and Swift, respectively.
Swift 3 and later (Swift 4 included)
let dateFormatter = DateFormatter()...
Possible to iterate backwards through a foreach?
... UPDATE: See [Bryan's answer to a similar question[(stackoverflow.com/a/3320924/199364), for a more modern answer, using Linq, and discussing both lists, and other enumerables.
– ToolmakerSteve
Mar 2 '17 at 20:28
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What is the difference between Θ(n) and O(n)?
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one is Big "O"
one is Big Theta
http://en.wikipedia.org/wiki/Big_O_notation
Big O means your algorithm will execute in no more steps than in given expression(n^2)
Big Omega means your algorithm will execute in no fewer steps than in the given expression(n^2)
When both condition are tru...
Why Func instead of Predicate?
...
32
Surely the actual reason for using Func instead of a specific delegate is that C# treats separa...
vs in Generics
...d Copsey
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4
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CSS hexadecimal RGBA?
... contains opacity value list in hex. gist.github.com/lopspower/03fb1cc0ac9f32ef38f4
– Ashish Kumar
May 1 '18 at 12:05
...