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How to avoid “RuntimeError: dictionary changed size during iteration” error?
...ying the dict:
for i in d.keys():
Note that this doesn't work in Python 3.x because keys returns an iterator instead of a list.
Another way is to use list to force a copy of the keys to be made. This one also works in Python 3.x:
for i in list(d):
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Principal component analysis in Python
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edited Sep 3 '10 at 11:40
nikow
19.6k66 gold badges4242 silver badges6969 bronze badges
a...
A migration to add unique constraint to a combination of columns
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answered Jul 30 '10 at 9:45
Robert SpeicherRobert Speicher
14.5k55 gold badges3636 silver badges4343 bronze badges
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How do I send a JSON string in a POST request in Go
...package works fine (playground):
func main() {
url := "http://restapi3.apiary.io/notes"
fmt.Println("URL:>", url)
var jsonStr = []byte(`{"title":"Buy cheese and bread for breakfast."}`)
req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonStr))
req.Header.Set("X-Cus...
Determine command line working directory when running node bin script
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Vadim BaryshevVadim Baryshev
21.6k33 gold badges5050 silver badges4545 bronze badges
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Is there a jQuery unfocus method?
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335
$('#textarea').blur()
Documentation at: http://api.jquery.com/blur/
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Static fields on a null reference in Java
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93
That behaviour is specified in the Java Language Specification:
a null reference may be used...
The way to check a HDFS directory's size?
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Prior to 0.20.203, and officially deprecated in 2.6.0:
hadoop fs -dus [directory]
Since 0.20.203 (dead link) 1.0.4 and still compatible through 2.6.0:
hdfs dfs -du [-s] [-h] URI [URI …]
You can also run hadoop fs -help for more info ...
Split a string by a delimiter in python
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3 Answers
3
Active
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File to byte[] in Java
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LAX1DUDE
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answered May 13 '09 at 16:48
svachonsvachon
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