How do you set a conditional in python based on datatypes?
How about, if isinstance(x, int): but a cleaner way would simply be sum(z for z in y if isinstance(z, int))
conditional
Conditional comment for ‘Except IE8’?
there’s some JS that I want to load for all browsers EXCEPT IE8, what conditional comment should I use? For something to appear in ‘other browsers’ that don’t support CCs, you need a downlevel-revealed conditional comment. <!–[if !IE 8]><!–> …. <!–<![endif]–> (this is slightly different to Microsoft’s official syntax which is not valid HTML.) “All … Read more
Pandas select rows and columns based on boolean condition
Let’s break down your problem. You want to Filter rows based on some boolean condition You want to select a subset of columns from the result. For the first point, the condition you’d need is – df[“col_z”] < m For the second requirement, you’d want to specify the list of columns that you need – … Read more
How do I use regular expressions in bash scripts?
It was changed between 3.1 and 3.2: This is a terse description of the new features added to bash-3.2 since the release of bash-3.1. Quoting the string argument to the [[ command’s =~ operator now forces string matching, as with the other pattern-matching operators. So use it without the quotes thus: i=”test” if [[ $i … Read more
Replacing Numpy elements if condition is met
>>> import numpy as np >>> a = np.random.randint(0, 5, size=(5, 4)) >>> a array([[4, 2, 1, 1], [3, 0, 1, 2], [2, 0, 1, 1], [4, 0, 2, 3], [0, 0, 0, 2]]) >>> b = a < 3 >>> b array([[False, True, True, True], [False, True, True, True], [ True, True, True, True], … Read more
Conditional with statement in Python
Python 3.3 introduced contextlib.ExitStack for just this kind of situation. It gives you a “stack”, to which you add context managers as necessary. In your case, you would do this: from contextlib import ExitStack with ExitStack() as stack: if needs_with(): gs = stack.enter_context(get_stuff()) # do nearly the same large block of stuff, # involving gs … Read more
How do I use properly CASE..WHEN in MySQL
Remove the course_enrollment_settings.base_price immediately after CASE: SELECT CASE WHEN course_enrollment_settings.base_price = 0 THEN 1 … END CASE has two different forms, as detailed in the manual. Here, you want the second form since you’re using search conditions.
C# conditional AND (&&) OR (||) precedence
Change the first false by true. I know it seems stupid to have (true || true) but it proves your point. bool result = true || true && false; // –> true result = (true || true) && false; // –> false result = true || (true && false); // –> true
IF… OR IF… in a windows batch file
The zmbq solution is good, but cannot be used in all situations, such as inside a block of code like a FOR DO(…) loop. An alternative is to use an indicator variable. Initialize it to be undefined, and then define it only if any one of the OR conditions is true. Then use IF DEFINED … Read more
Javascript switch vs. if…else if…else
Answering in generalities: Yes, usually. See More Info Here Yes, because each has a different JS processing engine, however, in running a test on the site below, the switch always out performed the if, elseif on a large number of iterations. Test site