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What is declarative programming? [closed]
...tion for a completely different user just executed a similar query and the table that you are joining with and that you worked so hard to avoid loading is already in memory anyway.
There is an interesting trade-off here: the machine has to work harder to figure out how to do something than it would...
Pointer to pointer clarification
... "lvalue" instead of "variable", but I feel it is more clear to describe mutable storage locations as "variables".)
So we have variables:
int i = 5, j = 6;
int *ip1 = &i, *ip2 = &j;
Variable ip1 contains a pointer. The & operator turns i into a pointer and that pointer value is assig...
What is a “symbol” in Julia?
...cally:
I am trying to use Julia's DataFrames package, specifically the readtable() function with the names option, but that requires a vector of symbols.
...
Are SVG parameters such as 'xmlns' and 'version' needed?
...id using
it, and update existing code if possible; see the compatibility table
at the bottom of this page to guide your decision. Be aware that this
feature may cease to work at any time.
The version attribute is used to indicate what specification a SVG
document conforms to. It is only...
How to initialize a JavaScript Date to a particular time zone
... support the full set of IANA time zone identifiers (see the compatibility table here). However, keep in mind that the only identifier required to be supported by Intl is 'UTC', thus you should check carefully if you need to support older browsers or atypical environments (for example, lightweight ...
PDO MySQL: Use PDO::ATTR_EMULATE_PREPARES or not?
...o 0x345678AB on 64bit machine )
Inability to make simple queries like LOCK TABLES ( it throws SQLSTATE[HY000]: General error: 2030 This command is not supported in the prepared statement protocol yet exception )
Need to fetch all rows from result or close cursor before next query ( with mysqlnd or e...
Change color of PNG image via CSS?
...s but supported in over 90% of browsers according to the following CanIUse table: https://caniuse.com/#feat=css-filters
You can change an image to grayscale, sepia and lot more (look at the example).
So you can now change the color of a PNG file with filters.
body {
background-color:#03...
Remote Connections Mysql Ubuntu
....xxx.xxx:3306 0.0.0.0:* LISTEN
2) Use FLUSH PRIVILEGES to force grant tables to be loaded if for some reason the changes not take effective immediately
GRANT ALL ON *.* TO 'user'@'localhost' IDENTIFIED BY 'passwd' WITH GRANT OPTION;
GRANT ALL ON *.* TO 'user'@'%' IDENTIFIED BY 'passwd' WITH GR...
Storing DateTime (UTC) vs. storing DateTimeOffset
...hat user.
Secondly if you want to convert for display, you need to have a table of all local time offset transitions for that timezone, simply knowing the current offset is not enough, because if you are showing a date/time from six months ago the offset will be different.
...
Include intermediary (through model) in responses in Django Rest Framework
...se SerializerMethodField on the object and explicitly query the Membership table like so:
class MembershipSerializer(serializers.ModelSerializer):
"""Used as a nested serializer by MemberSerializer"""
class Meta:
model = Membership
fields = ('id','group','join_date')
class ...