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Can I make the foreign key field optional in Django model
... answered Jul 8 '11 at 4:58
Abid AAbid A
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Query a parameter (postgresql.conf setting) like “max_connections”
...ings:
SHOW ALL;
There is also pg_settings:
The view pg_settings provides access to run-time parameters of the
server. It is essentially an alternative interface to the SHOW and
SET commands. It also provides access to some facts about each
parameter that are not directly available from ...
Install autoreconf on OS X v10.7 (Lion)?
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Just did this, autoconf is installed as a dependency of automake cc: @XavierShay
– rohitpaulk
May 4 '17 at 3:36
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setup cron tab to specific time of during weekdays
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Same as you did for hours:
*/2 09-18 * * 1-5 /path_to_script
0 and 7 stand for Sunday
6 stands for Saturday
so, 1-5 means from Monday to Friday
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How can I ensure that a division of integers is always rounded up?
... Also considering that DivRem just does a / and a % anyway, let's skip the call (and start with the easy comparison to avoid modulo calculation when it is not needed):
int div = myInt1 / myInt2;
if ((div >= 0) && (myInt1 % myInt2 != 0))
div++;
Reason this is wrong: -1 and 5 should ...
ggplot: How to increase spacing between faceted plots?
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Use the theme function:
library(grid)
p + theme(panel.spacing = unit(2, "lines"))
See also here: Slicing plots generated by ggplot2
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Assign variables to child template in {% include %} tag Django
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
Combining multiple @SuppressWarnings annotations - Eclipse Indigo
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If you take a look inside the annotation you will see this:
public @interface SuppressWarnings {
String[] value();
}
as you see, the value parameter is an array of Strings...
so the parameter in the annotation can be:
value1, value2 or valu...
Sourcemaps off by one line in Chrome, with Ruby on Rails, Webpack, and React JS
... by one line when I use the Chrome devtools debugger.
Webpack is set up inside a Ruby on Rails application to generate a concatenated, unminified JavaScript file composed of a couple dozen modules. Most of those modules are ReactJS components, and are parsed by the jsx loader. The output from We...
How to execute a MySQL command from a shell script?
...any error output. I suggest you edit your original question above and provide examples of what goes wrong.
Also when I'm troubleshooting a shell script I use the -x flag so I can see how it's executing each command:
$ bash -x myscript.sh
...