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Can I change multiplier property for NSLayoutConstraint?
...:
NSLayoutConstraint *standardConstraint, *zoomedConstraint;
// ...
// switch between constraints
standardConstraint.active = NO; // this line should always be the first line. because you have to deactivate one before activating the other one. or they will conflict.
zoomedConstraint.active = YES;
...
avoid page break inside row of table
... when I convert html to PDF by wkhtmltopdf. I use page-break-inside:avoid with table- its works, but I have so many rows,
then not work.
If set display of tr as block or some thing else then it change the formatting of table and insert double border.
Or it is possible to insert the table header o...
How do I find an element that contains specific text in Selenium Webdriver (Python)?
I'm trying to test a complicated javascript interface with Selenium (using the Python interface, and across multiple browsers). I have a number of buttons of the form:
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The apk must be signed with the same certificates as the previous version
I had uploaded my app to Google Play (back when it was called Android Market) some time ago.
11 Answers
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What's the “average” requests per second for a production web application?
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It's still showing less than 200,000/sec - the new monitoring page is grafana.wikimedia.org
– OJW
Mar 25 at 16:37
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python multithreading wait till all threads finished
...()
t3.start()
t1.join()
t2.join()
t3.join()
Thus the main thread will wait till t1, t2 and t3 finish execution.
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How to limit the maximum value of a numeric field in a Django model?
...us numeric fields available for use in models, e.g. DecimalField and PositiveIntegerField . Although the former can be restricted to the number of decimal places stored and the overall number of characters stored, is there any way to restrict it to storing only numbers within a certain range, e...
What is the easiest way to disable/enable buttons and links (jQuery + Bootstrap)
...is a button property which is handled by the browser:
<input type="submit" class="btn" value="My Input Submit" disabled/>
<input type="button" class="btn" value="My Input Button" disabled/>
<button class="btn" disabled>My Button</button>
To disable these with a custom jQue...
variable === undefined vs. typeof variable === “undefined”
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For undeclared variables, typeof foo will return the string literal "undefined", whereas the identity check foo === undefined would trigger the error "foo is not defined".
For local variables (which you know are declared somewhere), no such error would occur, hence the identity check....
How to round a number to significant figures in Python
...gt;> round(1234, -3)
1000.0
Thus if you need only most significant digit:
>>> from math import log10, floor
>>> def round_to_1(x):
... return round(x, -int(floor(log10(abs(x)))))
...
>>> round_to_1(0.0232)
0.02
>>> round_to_1(1234243)
1000000.0
>>&g...