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Random row selection in Pandas dataframe
Is there a way to select random rows from a DataFrame in Pandas.
6 Answers
6
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Generate Java class from JSON?
... only flat JSON and don't take care of types, but automate some routine
String str =
"{"
+ "'title': 'Computing and Information systems',"
+ "'id' : 1,"
+ "'children' : 'true',"
+ "'groups' : [{"
+ "'title' : 'Level one CIS'...
Constructor overloading in Java - best practice
...meter of different type on each one? Like - new Object(int aa) / new Objec(String bb) ?
– Botea Florin
Mar 12 '18 at 20:52
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Reverse of JSON.stringify?
I'm stringyfing an object like {'foo': 'bar'}
8 Answers
8
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Post parameter is always null
...ave to mess around with fiddler putting an = sign at the beginning of your string or changing the content-type.
As an aside, I first tried to following one of the answers above which was to change the content type to: "Content-Type: application/x-www-form-urlencoded". For raw data this is bad advi...
How to allow http content within an iframe on a https site
...e server online. Do the following steps:
Prepare your proxy server - install IIS, Apache
Get valid SSL certificate to avoid security errors (free from startssl.com for example)
Write a wrapper, which will download insecure content (how to below)
From your site/app get https://yourproxy.com/?page=h...
How to read XML using XPath in Java
...er = factory.newDocumentBuilder();
Document doc = builder.parse(<uri_as_string>);
XPathFactory xPathfactory = XPathFactory.newInstance();
XPath xpath = xPathfactory.newXPath();
XPathExpression expr = xpath.compile(<xpath_expression>);
Then you call expr.evaluate() passing in the docume...
Difference between UTF-8 and UTF-16?
... byte which is identical to US-ASCII representation. This way all US-ASCII strings become valid UTF-8, which provides decent backwards compatibility in many cases.
No null bytes, which allows to use null-terminated strings, this introduces a great deal of backwards compatibility too.
UTF-8 is indepe...
Converting java.util.Properties to HashMap
...lements Map<Object, Object>). You attempt to feed that into a Map<String, String>. It is therefore incompatible.
You need to feed string properties one by one into your map...
For instance:
for (final String name: properties.stringPropertyNames())
map.put(name, properties.getPrope...
Get the POST request body from HttpServletRequest
...
Easy way with commons-io.
IOUtils.toString(request.getReader());
https://commons.apache.org/proper/commons-io/javadocs/api-2.5/org/apache/commons/io/IOUtils.html
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