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Draw line in UIView
... a UIView. What is the easiest way to do it. For example, I want to draw a black horizontal line at y-coord=200.
8 Answers
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FragmentPagerAdapter getItem is not called
I am not able to reuse fragment in FragmentPagerAdapter.. Using destroyItem() method, It is deleting the fragment but still does not called getItem() again..There are just 2-3 Images so I am using FragmentPagerAdapter Instead of FragmentStatePagerAdapter..
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Setting WPF image source in code
I'm trying to set a WPF image's source in code. The image is embedded as a resource in the project. By looking at examples I've come up with the below code. For some reason it doesn't work - the image does not show up.
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How to check for null in Twig?
... %}
{# do something #}
{% endif %}
is defined checks whether the variable is defined:
{% if var is not defined %}
{# do something #}
{% endif %}
Additionally the is sameas test, which does a type strict comparison of two values, might be of interest for checking values other than null (...
Combine Date and Time columns using python pandas
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It's worth mentioning that you may have been able to read this in directly e.g. if you were using read_csv using parse_dates=[['Date', 'Time']].
Assuming these are just strings you could simply add them together (with a space), allowing you to apply to_datetime:
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Error: Cannot pull with rebase: You have unstaged changes
I have started collaborating with a few friends on a project & they use the heroku git repository.
8 Answers
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How do I make a Mac Terminal pop-up/alert? Applescript?
I want to be able to have my program display an alert, notice, whatever that displays my custom text. How is this done? Also, is it possible to make one with several buttons that sets a variable?
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Numbering rows within groups in a data frame
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Use ave, ddply, dplyr or data.table:
df$num <- ave(df$val, df$cat, FUN = seq_along)
or:
library(plyr)
ddply(df, .(cat), mutate, id = seq_along(val))
or:
library(dplyr)
df %>% group_by(cat) %>% mutate(id = row_number())
or (the most memory ...
How do I list the symbols in a .so file
How do I list the symbols being exported from a .so file? If possible, I'd also like to know their source (e.g. if they are pulled in from a static library).
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Object.watch() for all browsers?
Please note that Object.Watch and Object.Observe are both deprecated now (as of Jun 2018).
8 Answers
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