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Redis strings vs Redis hashes to represent JSON: efficiency?
...d HSET commands is still O(1): the hash will be converted into a real hash table as soon as the number of elements it contains will grow too much
But you should not worry, you'll break hash-max-ziplist-entries very fast and there you go you are now actually at solution number 1.
Second option wil...
Difference between timestamps with/without time zone in PostgreSQL
...d '2011-07-01 06:30:30+05' is ignored but i'm able to do insert into test_table (date) values ('2018-03-24T00:00:00-05:00'::timestamptz); and it will convert it to utc correctly. where date is timestamp without timezone. I'm trying to understand what the main value of timestamp with timezone is an...
Circular (or cyclic) imports in Python
...t remember the following:
'import' and 'from xxx import yyy' are executable statements. They execute
when the running program reaches that line.
If a module is not in sys.modules, then an import creates the new module
entry in sys.modules and then executes the code in the module. It do...
Get operating system info
...9
[cssversion] => 2
[frames] => 1
[iframes] => 1
[tables] => 1
[cookies] => 1
[backgroundsounds] =>
[vbscript] =>
[javascript] => 1
[javaapplets] => 1
[activexcontrols] =>
[cdf] =>
[aol] =>
[beta] => 1
[wi...
urlencode vs rawurlencode?
... string before return.
Grand Summary
Both use the same hexchars lookup table
URIEncode doesn't terminate a string with \0, raw does.
If you're working in EBCDIC I'd suggest using RawUrlEncode, as it manages the ~ that UrlEncode does not (this is a reported issue). It's worth noting that ASCII an...
Why is exception handling bad?
...osts zero execution time, and have "throw" look up exception handlers in a table based on the caller addresses it sees on the stack... I would say that the biggest reasons not to use exceptions are not at all related to performance.
– asveikau
Nov 15 '09 at 2:...
How to perform a mysqldump without a password prompt?
...y user, and in no case the root user. It can be done like this: GRANT LOCK TABLES, SELECT ON *.* TO 'BACKUPUSER'@'%' IDENTIFIED BY 'PASSWORD';
– gadjou
Feb 21 '17 at 8:34
...
What does it mean to “program to an interface”?
...
Using interfaces is a key factor in making your code easily testable in addition to removing unnecessary couplings between your classes. By creating an interface that defines the operations on your class, you allow classes that want to use that functionality the ability to use it withou...
Conceptually, how does replay work in a game?
... shouldn't be done. I don't care if he uses the system API or a predefined table of random numbers. What I originally said was correct. Every function in his engine should produce the same result based on its inputs. Time should never be a factor.
– Timothy Baldridge
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How do I get current date/time on the Windows command line in a suitable format for usage in a file/
...en WMIC Path Win32_LocalTime Get Day,Hour,Minute,Month,Second,Year /Format:table. Likewise, to get 20120623-1619 in my local Amsterdam time zone, in one line: for /f %%a in ('wmic os get LocalDateTime ^| findstr ^[0-9]') do (set ts=%%a) & set datetime=%ts:~0,8%-%ts:~8,4%
– ...