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Determine when a ViewPager changes pages
...ages (Fragments) inside a ViewPager, however I only want to display a menu item for two of those pages.
5 Answers
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How to measure elapsed time in Python?
...Use timeit.default_timer instead of timeit.timeit. The former provides the best clock available on your platform and version of Python automatically:
from timeit import default_timer as timer
start = timer()
# ...
end = timer()
print(end - start) # Time in seconds, e.g. 5.38091952400282
timeit.d...
Does Java support default parameter values?
...ters).
For constructors, See Effective Java: Programming Language Guide's Item 1 tip (Consider static factory methods instead of constructors) if the overloading is getting complicated. For other methods, renaming some cases or using a parameter object can help. This is when you have enough complex...
How to check if an option is selected?
...unction() {
if($(this).is(':selected')) ...
The non jQuery (arguably best practice) way to do it would be:
$('#mySelectBox option').each(function() {
if(this.selected) ...
Although, if you are just looking for the selected value try:
$('#mySelectBox').val()
If you are looking for the...
Shallow copy of a Map in Java
...h Bloch on Design - Copy Constructor versus Cloning
If you've read the item about cloning in my book, especially if you read between the lines, you will know that I think clone is deeply broken. [...] It's a shame that Cloneable is broken, but it happens.
Bloch (who by the way, designed and im...
How to turn off CodeLens-References
...red to be on because it is the only one that knows how to do "placeholder" items (the one that says "- references"), and is guaranteed to show up everywhere that codelens appears.
If you could turn off references, then it is highly possible that codelens would reserve space for indicators, and yet...
How to differentiate between time to live and time to idle in ehcache
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@Gayathri If you had a data item that is accessed often (every two seconds) but has a TTL of sixty seconds. It would still be pulled from source once every sixty seconds even if it is accessed continually (never idle).
– C. Ross
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What's the purpose of starting semi colon at beginning of JavaScript? [duplicate]
... @pst. Fair enough. I'm sure you can code fine in your style. Indeed best practice is subjective. Your statement 'Once the rules for when to start a line with a semi-colon are known...' exposes why always using a semi-colon is best practice. Because then you don't need to know these additiona...
How to assign Profile values?
...added Profile properties in the Web.config file but cannot access Profile. Item in the code or create a new profile.
10 An...
What can I do to resolve a “Row not found or changed” Exception in LINQ to SQL on a SQL Server Compa
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I have scheduled items submitted by an application front-end to the database. These trigger execution in a service, each on different threads. The user can hit a 'cancel' button which changes all the outstanding command's status. The service ...