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NSUserDefaults - How to tell if a key exists
I'm working on a small iPhone app, and I am using NSUserDefaults as my data persistence. It only has to keep track of a few things, such as some names and some numbers so I figure I might as well keep it simple.
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How can I remove 3 characters at the end of a string in php?
... a strlen call, since, as noted in the substr docs:
If length is given and is negative, then that many characters will be omitted from the end of string
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Does Java have something like C#'s ref and out keywords?
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No, Java doesn't have something like C#'s ref and out keywords for passing by reference.
You can only pass by value in Java. Even references are passed by value. See Jon Skeet's page about parameter passing in Java for more details.
To do something similar to ref or ou...
What is the best way to deal with the NSDateFormatter locale “feechur”?
...to self = [self init]; causes the NSDateFormatter initialization to occur, and setLocale is happy again.
Here is the "final" source for the category's .m:
#import "NSDateFormatter+Locale.h"
@implementation NSDateFormatter (Locale)
- (id)initWithSafeLocale {
static NSLocale* en_US_POSIX = nil;
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Why are there no ++ and -- operators in Python?
Why are there no ++ and -- operators in Python?
19 Answers
19
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How to create a css rule for all elements except one class?
... for some but for me I was hoping it would read it like table {color:red;} and just ignore the :not().
– DutGRIFF
May 11 '14 at 2:53
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Using the “start” command with parameters passed to the started program
...he argument is null or empty. Supply an argument that is not null or empty and then try the command again
– geotheory
Oct 20 '14 at 12:04
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Specify custom Date format for colClasses argument in read.table/read.csv
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You can write your own function that accepts a string and converts it to a Date using the format you want, then use the setAs to set it as an as method. Then you can use your function as part of the colClasses.
Try:
setAs("character","myDate", function(from) as.Date(from, for...
how to draw directed graphs using networkx in python?
... to map on to a graph. In the below, I want to use Arrow to go from A to D and probably have the edge colored too in (red or something).
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Declare and Initialize String Array in VBA
...Array( "Cat", "Dog" , "Rabbit"). Variants - yuck!
– Andez
Sep 19 '14 at 10:03
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