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When to use NSInteger vs. int
...e correct format specifier you should use for each of these types, see the String Programming Guide's section on Platform Dependencies
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What is the benefit of using Fragments in Android, rather than Views?
... for last year, I was also thinking that Fragments don't provide any extra ordinary feature, but I experienced that after clicking back on activity I was loosing all images downloaded in that, so had to add cache implementation, now I'm thinking using fragments it may be very easy
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Are multiple `.gitignore`s frowned on?
...ability to have multiple .gitignore files is very useful is if you want an extra directory in your working copy that you never intend to commit. Just put a 1-byte .gitignore (containing just a single asterisk) in that directory and it will never show up in git status etc.
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How can I remove a character from a string using Javascript?
...st isn't right.
All I would like to do is remove the character r from a string.
The problem is, there is more than one instance of r in the string.
However, it is always the character at index 4 (so the 5th character).
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Can't use Swift classes inside Objective-C
...import Foundation
@objc
class SwiftClass:NSObject {
private var _stringValue: String
var stringValue: String {
get {
print("SwiftClass get stringValue")
return _stringValue
}
set {
print("SwiftClass set stringValue = \(newValu...
How to implement Enums in Ruby?
...e when you want to enhance readability without littering code with literal strings.
postal_code[:minnesota] = "MN"
postal_code[:new_york] = "NY"
Constants are appropriate when you have an underlying value that is important. Just declare a module to hold your constants and then declare the constan...
Handling specific errors in JavaScript (think exceptions)
... In Javascript you can throw whatever you want, be it a simple string, a number (think error code) or a fully qualified object. Sweet!
– Abraham Brookes
Jan 10 '19 at 0:24
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How to parse JSON in Scala using standard Scala classes?
...pply(a:Any):Option[T] = Some(a.asInstanceOf[T]) }
object M extends CC[Map[String, Any]]
object L extends CC[List[Any]]
object S extends CC[String]
object D extends CC[Double]
object B extends CC[Boolean]
val jsonString =
"""
{
"languages": [{
"name": "English",
...
Rails: Is there a rails trick to adding commas to large numbers?
...
Sure, it reverses the string, then adds a comma after any sequence of 3 digits that is also followed by another digit, then reverses it back.
– pguardiario
Feb 22 '13 at 0:04
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In Python, how do I read the exif data for an image?
...eric tags. If you want the dictionary indexed by the actual EXIF tag name strings, try something like:
import PIL.ExifTags
exif = {
PIL.ExifTags.TAGS[k]: v
for k, v in img._getexif().items()
if k in PIL.ExifTags.TAGS
}
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