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Encoding URL query parameters in Java
...ed to give it parameter value only and not the whole URL. Consider example http://example.com/?url=http://example.com/?q=c&sort=name. Should it encode &sort=name or not? There is no way to distinguish value from the URL. That is the exact reason why you need value encoding in the first place...
Format numbers to strings in Python
... tax: $14.07'
>>> d = {'web': 'user', 'page': 42}
>>> 'http://xxx.yyy.zzz/%(web)s/%(page)d.html' % d
'http://xxx.yyy.zzz/user/42.html'
Here are the equivalent snippets but using str.format():
>>> "Name: {0}, age: {1}".format('John', 35)
'Name: John, age: 35'
>&...
CORS: Cannot use wildcard in Access-Control-Allow-Origin when credentials flag is true
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Besides * is too permissive and would defeat use of credentials. So set http://localhost:3000 or http://localhost:8000 as the allow origin header.
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SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
...ns/SystemRootCertificates.keychain >> "$cert_file"
The whole code: https://github.com/wayneeseguin/rvm/blob/master/scripts/functions/osx-ssl-certs
For non OSX users
Make sure to update package ca-certificates. (on old systems it might not be available - do not use an old system which doe...
How to urlencode data for curl command?
...lencode "paramName=value" \
--data-urlencode "secondParam=value" \
http://example.com
See the man page for more info.
This requires curl 7.18.0 or newer (released January 2008). Use curl -V to check which version you have.
You can as well encode the query string:
curl -G \
--data-u...
Cluster analysis in R: determine the optimal number of clusters
...Look for a bend or elbow in the sum of squared error (SSE) scree plot. See http://www.statmethods.net/advstats/cluster.html & http://www.mattpeeples.net/kmeans.html for more. The location of the elbow in the resulting plot suggests a suitable number of clusters for the kmeans:
mydata <- d
ws...
Finding the id of a parent div using Jquery
...nt from the jQuery object, in this case element 0, thus the first element. http://docs.jquery.com/Selectors/eq#index
$(selector).siblings(siblingsSelector) will select all siblings (elements with the same parent) that match the siblingsSelector http://docs.jquery.com/Traversing/siblings#expr
$(selec...
Android LinearLayout Gradient Background
...t;?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="50dip"
android:orientation="horizontal"
android:background="@drawable/main_header_selector">
</Linear...
Setting multiple attributes for an element at once with JavaScript
...key, attrs[key]);
}
}
Call it like this:
setAttributes(elem, {"src": "http://example.com/something.jpeg", "height": "100%", ...});
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Programmer-friendly search engine? [closed]
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Try http://www.symbolhound.com .
This seems to solve your problem. SymbolHound is a search engine that doesn't ignore symbols or special characters in web queries like google does. It's not a source code search, either. Hope th...