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What does the “yield” keyword do?
...i)
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Everything you can use "for... in..." on is an iterable; lists, strings, files...
These iterables are handy because you can read them as much as you wish, but you store all the values in memory and this is not always what you want when you have a lot of values.
Generators
Generators ar...
What exactly is an HTTP Entity?
... @lmray: they are entirely different entities. ;) (One is about encoding strings in a HTML text, the other is about structuring information when a browser and a server talk to each other over the HTTP protocol. Also, one is more confusing than the other. Or vice versa. ;-o )
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Can a CSV file have a comment?
...n't pass some validation rules. In that case, you'd have trouble writing a string-type field description record for any numeric fields.
I am by no means an expert, though, so feel free to point out any mistakes in my theory.
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Jackson Vs. Gson [closed]
...pe information)
Integrated support for binary content (base64 to/from JSON Strings)
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How to list all the files in a commit?
...sses the commit ID output.
The --pretty argument specifies an empty format string to avoid the cruft at the beginning.
The --name-only argument shows only the file names that were affected (Thanks Hank). Use --name-status instead, if you want to see what happened to each file (Deleted, Modified, Add...
Is it possible to forward-declare a function in Python?
...turally it makes little sense to have it afterwards), one can just store a string and try to call the function later.
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How to succinctly write a formula with many variables from a data frame?
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A slightly different approach is to create your formula from a string. In the formula help page you will find the following example :
## Create a formula for a model with a large number of variables:
xnam <- paste("x", 1:25, sep="")
fmla <- as.formula(paste("y ~ ", paste(xnam, col...
jQuery 'input' event
...trary could be surmised from rereading (i.e. from a reference to different string identifiers between Level 0 and Level 2 models). That is quite misleading.
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How to hide first section header in UITableView (grouped style)
...{
if (section == 0)
return 1.0f;
return 32.0f;
}
- (NSString*) tableView:(UITableView *) tableView titleForHeaderInSection:(NSInteger)section
{
if (section == 0) {
return nil;
} else {
// return some string here ...
}
}
- (void) viewDidLoad
{
[su...
How can I extend typed Arrays in Swift?
...ran into a similar issue when trying to remove duplicates from an array of strings. I was able to add an extension on the Array class that does just what I was looking to do.
extension Array where Element: Hashable {
/**
* Remove duplicate elements from an array
*
* - returns: A ...