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differentiate null=True, blank=True in django
... It might be a useful answer if you drew some summary conclusions from the data presented, but I don't think that presenting a raw data dump is a useful answer. In this case it is actually a misleading answer, since (without further comment) it implies that the effect of both blank and null...
Your content must have a ListView whose id attribute is 'android.R.id.list'
...savedInstanceState);
setContentView(R.layout.activity_main);
addPreferencesFromResource(R.xml.preferences);
preferences.xml:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
<PreferenceCategory
android:key="up...
Why does (0 < 5 < 3) return true?
...he programmer uses to explicitly check a type. This is implicit conversion from a boolean to an integer.
– erickson
Nov 4 '10 at 18:27
4
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Convert normal date to unix timestamp
...add the toFixed(0) to remove any decimals when dividing by 1000 to convert from milliseconds to seconds.
The .getTime() function returns the timestamp in milliseconds, but true unix timestamps are always in seconds.
share
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Call a Javascript function every 5 seconds continuously [duplicate]
... use instead of setTimeout.
It has a similar signature, so the transition from one to another is simple:
setInterval(function() {
// do stuff
}, duration);
share
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improve this answer
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Do something if screen width is less than 960 px
...n't know what you mean by 'clear' an event so I went with preventing event from firing again.
– jk.
Sep 2 '12 at 14:42
1
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Python str vs unicode types
...seem to be able to hold Unicode strings. Is there any special reason apart from being able to set Unicode codes in unicode strings using the escape char \ ?:
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Substitute multiple whitespace with single whitespace in Python [duplicate]
...on as asked (the unexpressed intent of the question of course might differ from the very explicit expression of it, but, mind-reading is not a very widespread skill:-).
– Alex Martelli
Aug 28 '15 at 21:45
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How to print like printf in Python3?
...
Simple printf() function from O'Reilly's Python Cookbook.
import sys
def printf(format, *args):
sys.stdout.write(format % args)
Example output:
i = 7
pi = 3.14159265359
printf("hi there, i=%d, pi=%.2f\n", i, pi)
# hi there, i=7, pi=3.14
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Disable a group of tests in rspec?
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Use exclusion filters.
From that page:
In your spec_helper.rb (or rails_helper.rb)
RSpec.configure do |c|
c.filter_run_excluding :broken => true
end
In your test:
describe "group 1", :broken => true do
it "group 1 example 1" do
end
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