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How to detect if a property exists on an ExpandoObject?
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According to MSDN the declaration shows it is implementing IDictionary:
public sealed class ExpandoObject : IDynamicMetaObjectProvider,
IDictionary<string, Object>, ICollection<KeyValuePair<string, Object>>,
IEnumerable<KeyValuePair&...
How to lazy load images in ListView in Android
I am using a ListView to display some images and captions associated with those images. I am getting the images from the Internet. Is there a way to lazy load images so while the text displays, the UI is not blocked and images are displayed as they are downloaded?
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How can I reverse a NSArray in Objective-C?
...hile (i < j) {
[self exchangeObjectAtIndex:i
withObjectAtIndex:j];
i++;
j--;
}
}
@end
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Continuous Integration for Ruby on Rails? [closed]
...uous Integration solution for Ruby on Rails, but haven't been too pleased with the results. I came from a .NET shop that used CruiseControl.NET and was really spoiled with its ease of use and rich status/reporting.
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Remove empty elements from an array in Javascript
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EDIT: This question was answered almost nine years ago when there were not many useful built-in methods in the Array.prototype.
Now, certainly, I would recommend you to use the filter method.
Take in mind that this method wil...
How can I detect if a browser is blocking a popup?
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edited Feb 22 '18 at 16:54
Dez
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Using a dispatch_once singleton model in Swift
...uct approach if you need to support earlier versions.
From my experience with Swift there are three approaches to implement the Singleton pattern that support lazy initialization and thread safety.
Class constant
class Singleton {
static let sharedInstance = Singleton()
}
This approach supp...
Execute a terminal command from a Cocoa app
...andle *file = pipe.fileHandleForReading;
NSTask *task = [[NSTask alloc] init];
task.launchPath = @"/usr/bin/grep";
task.arguments = @[@"foo", @"bar.txt"];
task.standardOutput = pipe;
[task launch];
NSData *data = [file readDataToEndOfFile];
[file closeFile];
NSString *grepOutput = [[NSString all...
Checkout one file from Subversion
"It is not possible to check out a single file. The finest level of checkouts you can do is at the directory level."
19 Ans...
Unable to open project… cannot be opened because the project file cannot be parsed
...ckages Contents. After that open your projectname.pbxproj file in a text editor. Now search for the line containing <<<<<<< .mine, ======= and >>>>>>> .r. For example in my case it looked liked this
<<<<<<< .mine
9ADAAC6A15DCEF6A...