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When to use valueChangeListener or f:ajax listener?
...be invoked when the form is submitted and the submitted value is different from the initial value. It's thus not invoked when only the HTML DOM change event is fired. If you would like to submit the form during the HTML DOM change event, then you'd need to add another <f:ajax/> without a liste...
plot a circle with pyplot
...nd since the limits have never been set, they defaults to an x and y range from 0 to 1.
Here's a continuation of the example, showing how units matter:
circle1 = plt.Circle((0, 0), 2, color='r')
# now make a circle with no fill, which is good for hi-lighting key results
circle2 = plt.Circle((5, 5)...
What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort
sort provides two kinds of numeric sort. This is from the man page:
3 Answers
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What is the difference between save and insert in Mongo DB?
...orms an update, replacing all field in the existing record with the fields from the document.
Save vs Update :
update modifies an existing document matched with your query params. If there is no such matching document, that's when upsert comes in picture.
upsert : false : Nothing happens when no ...
What specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?
...as calculating the elapsed time. Do you know if I can get the elapsed time from the CPU time?
– Bionix1441
Dec 6 '17 at 11:43
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How to write trycatch in R
I want to write trycatch code to deal with error in downloading from the web.
5 Answers
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Haskell testing workflow
...started a new Haskell project and wanted to set up a good testing workflow from the beginning. It seems like Haskell has a lot of excellent and unique testing tools and many different ways to integrate them.
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Looping through array and removing items, without breaking for loop
... the next item in the iteration, since the indexing affects only the items from the current point to the end of the Array, and the next item in the iteration is lower than the current point.
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How do I split a multi-line string into multiple lines?
...ython, represents a Unix line-break (ASCII decimal code 10), independently from the platform where you run it. However, the linebreak representation is platform-dependent. On Windows, \n is two characters, CR and LF (ASCII decimal codes 13 and 10, AKA \r and \n), while on any modern Unix (including ...
appearanceWhenContainedIn in Swift
... in Swift (I repeated the same method for UIBarItem, which doesn't descend from UIView):
// UIAppearance+Swift.h
#import <UIKit/UIKit.h>
NS_ASSUME_NONNULL_BEGIN
@interface UIView (UIViewAppearance_Swift)
// appearanceWhenContainedIn: is not available in Swift. This fixes that.
+ (instancetype...