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MySQL Cannot drop index needed in a foreign key constraint
... a SO Question on the topic).
ALTER TABLE mytable DROP FOREIGN KEY mytable_ibfk_1 ;
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Global access to Rake DSL methods is deprecated
...
Adding include Rake::DSL to the Rakefile before the applications load_tasks were called also worked for me.
So in the above user's case before the DemoApp::Application.load_tasks in the Rakefile.
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Converting datetime.date to UTC timestamp in Python
...ase on the given platform. You could use pytz module (e.g., via tzlocal.get_localzone()) to get access to the tz database on all platforms. Also, utcfromtimestamp() may fail and mktime() may return non-POSIX timestamp if "right" timezone is used.
To convert datetime.date object that represents da...
AngularJS - Trigger when radio button is selected
...pe="radio" ng-model="value" value="three"/>
The javascript file:
var _value = null;
Object.defineProperty($scope, 'value', {
get: function () {
return _value;
},
set: function (value) {
_value = value;
someFunction();
}
});
see this plunker for the implementation...
Create an array with same element repeated multiple times
..., 5, 5, 5, 5, 5]
>>> //Or in ES6
>>> [...Array(10)].map((_, i) => 5)
[5, 5, 5, 5, 5, 5, 5, 5, 5, 5]
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How to implement a ConfigurationSection with a ConfigurationElementCollection
...ypeof(CustomApplicationConfigSection));
public const string SECTION_NAME = "CustomApplicationConfig";
[ConfigurationProperty("Credentials")]
public CredentialsConfigElement Credentials
{
get
{
return base["Credentials"] as Cred...
Convert UTC datetime string to local datetime
...e import datetime
from dateutil import tz
# METHOD 1: Hardcode zones:
from_zone = tz.gettz('UTC')
to_zone = tz.gettz('America/New_York')
# METHOD 2: Auto-detect zones:
from_zone = tz.tzutc()
to_zone = tz.tzlocal()
# utc = datetime.utcnow()
utc = datetime.strptime('2011-01-21 02:37:21', '%Y-%m-%d ...
Optimize Font Awesome for only used classes
...m/FortAwesome/Font-Awesome/blob/master/sass/font-awesome.sass to make it _font-awesome.sass so I can @import in my Sass project. I am also using http://middlemanapp.com/ to convert Sass to Css . Questions:
...
Using multiple delimiters in awk
...n the input field separator.
See another example:
$ cat file
hello#how_are_you
i#am_very#well_thank#you
This file has two fields separators, # and _. If we want to print the second field regardless of the separator being one or the other, let's make both be separators!
$ awk -F"#|_" '{print ...
How do you get a Golang program to print the line number of the error it just called?
... // the error happened, 0 = this function, we don't want that.
_, fn, line, _ := runtime.Caller(1)
log.Printf("[error] %s:%d %v", fn, line, err)
b = true
}
return
}
//this logs the function name as well.
func FancyHandleError(err error) (b bool) {
if err != n...