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How to take a screenshot programmatically on iOS
...iOS7 or above
- (UIImage *) screenshot {
CGSize size = CGSizeMake(your_width, your_height);
UIGraphicsBeginImageContextWithOptions(size, NO, [UIScreen mainScreen].scale);
CGRect rec = CGRectMake(0, 0, your_width, your_height);
[_viewController.view drawViewHierarchyInRect:rec afte...
NSDate beginning of day and end of day
...o: noon)!
let specificDate = Date("2020-01-01")
extension Date {
init(_ dateString:String) {
let dateStringFormatter = DateFormatter()
dateStringFormatter.dateFormat = "yyyy-MM-dd"
dateStringFormatter.locale = NSLocale(localeIdentifier: "en_US_POSIX") as Locale
l...
Exit codes in Python
...re.
Example:
import sys, os
try:
config()
except:
sys.exit(os.EX_CONFIG)
try:
do_stuff()
except:
sys.exit(os.EX_SOFTWARE)
sys.exit(os.EX_OK) # code 0, all ok
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Adding rounded corner and drop shadow to UICollectionViewCell
... layer.cornerRadius = radius
}
}
You can call it in collectionView(_:cellForItemAt:) of the datasource once you dequeue your cell.
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Is there a way to create a function from a string with javascript?
...github.com/reduardo7/sjsClass
Example
Class.extend('newClassName', {
__constructor: function() {
// ...
}
});
var x = new newClassName();
// Next is TRUE
newClassName.name === 'newClassName'
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Relative frequencies / proportions with dplyr
...
Try this:
mtcars %>%
group_by(am, gear) %>%
summarise(n = n()) %>%
mutate(freq = n / sum(n))
# am gear n freq
# 1 0 3 15 0.7894737
# 2 0 4 4 0.2105263
# 3 1 4 8 0.6153846
# 4 1 5 5 0.3846154
From the dplyr vigne...
How to tell git to ignore individual lines, i.e. gitignore for specific lines of code [duplicate]
...all. Eg, instead of changing flags = foo | bar to flags = foo | bar | debug_thingy, you'd have to make sure you add a completely new line like flags |= debug_thingy after.
– Kat
May 25 '18 at 20:27
...
Hide separator line on one UITableViewCell
...er}) {
cell.separatorInset = UIEdgeInsetsMake(0.0f, 0.0f, 0.0f, CGFLOAT_MAX);
}
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Converting an object to a string
...bject to real state from "[object Object]"..
– techie_28
May 18 '16 at 6:08
JSON.stringify is not suitable for all cas...
In Vim, is there a way to paste text in the search line?
...uts (e.g, a calculator, current filename, clipboard contents). Type :help c_<C-R> to see the full list.
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