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Add SUM of values of two LISTS into new LIST
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just curious how would zip() handles if array lengths for different? i.e what does zip returns for different array lengths and how would that affect the operation for x + y
– ealeon
Oct 24 '15 at 15:00
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SharedPreferences.onSharedPreferenceChangeListener not being called consistently
..., but eventually, will get garbage collected, removed from the WeakHashMap and stop working.
Keep a reference to the listener in a field of your class and you will be OK, provided your class instance is not destroyed.
i.e. instead of:
prefs.registerOnSharedPreferenceChangeListener(
new SharedPr...
Rails update_attributes without save?
...utes({ :name => 'Josh', :is_admin => true }) raises an error message and doesn't actually set the user's name property.
– Ajedi32
Sep 5 '12 at 19:50
7
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Rotating x axis labels in R for barplot
...I'm guessing there's an easier way. But you could suppress the bar labels and the plot text of the labels by saving the bar positions from barplot and do a little tweaking up and down. Here's an example with the mtcars data set:
x <- barplot(table(mtcars$cyl), xaxt="n")
labs <- paste(names(...
SQL Query to concatenate column values from multiple rows in Oracle
..., which works on versions prior to 11.2. Because WM_CONCAT is undocumented and unsupported by Oracle, it's recommended not to use it in production system.
With XMLAGG you can do the following:
SELECT XMLAGG(XMLELEMENT(E,ename||',')).EXTRACT('//text()') "Result"
FROM employee_names
What this doe...
Modify SVG fill color when being served as Background-Image
... a resource server side that outputs your svg according to GET parameters, and you serve it on a certain url.
Then you just use that url in your css.
Because as a background img, it isn't part of the DOM and you can't manipulate it.
Another possibility would be to use it regularly, embed it in a p...
C# How can I check if a URL exists/is valid?
... looks up a stock symbol on Yahoo! Finance, downloads the historical data, and then plots the price history for the specified ticker symbol.
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C# Pass Lambda Expression as Method Parameter
I have a lambda expression that I'd like to be able to pass around and reuse. Here's the code:
4 Answers
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Android: Tabs at the BOTTOM
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Here's the simplest, most robust, and scalable solution to get tabs on the bottom of the screen.
In your vertical LinearLayout, put the FrameLayout above the TabWidget
Set layout_height to wrap_content on both FrameLayout and TabWidget
Set FrameLayout'...
How to run JUnit test cases from the command line
I would like to run JUnit test cases from the command line.
How can I do this?
11 Answers
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