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Extract subset of key-value pairs from Python dictionary object?
...
A bit shorter, at least:
wanted_keys = ['l', 'm', 'n'] # The keys you want
dict((k, bigdict[k]) for k in wanted_keys if k in bigdict)
share
|
improve thi...
How to define two fields “unique” as couple
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There is a simple solution for you called unique_together which does exactly what you want.
For example:
class MyModel(models.Model):
field1 = models.CharField(max_length=50)
field2 = models.CharField(max_length=50)
class Meta:
unique_together = ('field1', 'fi...
Check to see if python script is running
...stem is using domain sockets:
import socket
import sys
import time
def get_lock(process_name):
# Without holding a reference to our socket somewhere it gets garbage
# collected when the function exits
get_lock._lock_socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
try:
...
How do I pass command line arguments to a Node.js program?
...ice(2));
console.dir(argv);
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$ node example/parse.js -a beep -b boop
{ _: [], a: 'beep', b: 'boop' }
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$ node example/parse.js -x 3 -y 4 -n5 -abc --beep=boop foo bar baz
{ _: [ 'foo', 'bar', 'baz' ],
x: 3,
y: 4,
n: 5,
a: true,
b: true,
c: true,
beep: 'boop' }
...
Google Maps v3 - limit viewable area and zoom level
...});
// Limit the zoom level
google.maps.event.addListener(map, 'zoom_changed', function() {
if (map.getZoom() < minZoomLevel) map.setZoom(minZoomLevel);
});
</script>
</body>
</html>
Screenshot from the above example. The user will not be able to drag furt...
How to modify Github pull request？
...nswered Apr 29 '14 at 18:08
user_19user_19
55177 silver badges1212 bronze badges
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How to Convert all strings in List to lower case using LINQ?
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var _reps = new List(); // with variant data
_reps.ConvertAll<string>(new Converter<string,string>(delegate(string str){str = str.ToLower(); return str;})).Contains("invisible"))
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Difference between fmt.Println() and println() in Go
...Strings(1, 5)
func rangeOverIntsAndStrings(args ...interface{}) {
for _, v := range args {
println(v)
}
}
// output
(0x108f060,0x10c5358)
(0x108f060,0x10c5360)
vs
func rangeOverIntsAndStrings(args ...interface{}) {
for _, v := range args {
fmt.Println(v)
}
}
...
invalid target release: 1.7
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You need to set JAVA_HOME to your jdk7 home directory, for example on Microsoft Windows:
"C:\Program Files\Java\jdk1.7.0_40"
or on OS X:
/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home
...
Advantages to Using Private Static Methods
...y true. Let's assume that a Library has an instance field List<Book> _books to store it's books (not how you'd design a Library class probably but w/e), and it passes this list to findBook, and that static method calls books.Clear() or books.Reverse() and so on. If you give a static method acc...