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Can someone explain the traverse function in Haskell?
I am trying and failing to grok the traverse function from Data.Traversable . I am unable to see its point. Since I come from an imperative background, can someone please explain it to me in terms of an imperative loop? Pseudo-code would be much appreciated. Thanks.
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Xcode 4 - “Valid signing identity not found” error on provisioning profiles on a new Macintosh insta
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With Xcode 4.2 and later versions, including XCode 4.6, there is a better way to migrate your entire developer profile to a new machine. On your existing machine, launch Xcode and do this:
Open the Organizer (Shift-Command-2).
Select the Devices tab.
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IOS: create a UIImage or UIImageView with rounded corners
...r;
@end
// UIImageView+OSExt.m
#import "UIImageView+OSExt.h"
@implementation UIImageView (OSExt)
- (void)layoutSublayersOfLayer:(CALayer *)layer
{
for ( CALayer *sub in layer.sublayers )
{
if ( YES == [sub.name isEqual:@"border-shape"])
{
CGFloat borderHalf = fl...
SmtpException: Unable to read data from the transport connection: net_io_connectionclosed
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EDIT: Super Redux Version
Try port 587 instead of 465. Port 465 is technically deprecated.
After a bunch of packet sniffing I figured it out. First, here's the short answer:
The .NET SmtpClient only supports encryption via STARTTLS. If the En...
Handling JSON Post Request in Go
... on a few factors, json.Decoder may not fully read the body and the connection will be ineligible for reuse.
– Kale B
May 21 '17 at 20:58
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How to prevent a jQuery Ajax request from caching in Internet Explorer?
...to your URL. Make sure your back end can ignore the "_" in the URL's query parameters.
– user3458
Sep 26 '13 at 19:34
4
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How to install pip for Python 3 on Mac OS X?
...alls pip3 as part of the stock install.
I ended up posting this same question on the python mailing list, and got the following answer:
# download and install setuptools
curl -O https://bootstrap.pypa.io/ez_setup.py
python3 ez_setup.py
# download and install pip
curl -O https://bootstrap.pypa.io/g...
What is a JavaBean exactly?
...ument constructor
Implements Serializable.
That's it. It's just a convention. Lots of libraries depend on it though.
With respect to Serializable, from the API documentation:
Serializability of a class is enabled by the class implementing the
java.io.Serializable interface. Classes that do...
How can I create a UILabel with strikethrough text?
...leAttributeName, value: 2, range: somePartStringRange)
Objective-C
In iOS 6.0 > UILabel supports NSAttributedString
NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:@"Your String here"];
[attributeString addAttribute:NSStrikethroughStyleAttribut...
How to fix the datetime2 out-of-range conversion error using DbContext and SetInitializer?
... /// DateTime with a value of null.
/// </summary>
/// <param name="date">Date to check</param>
/// <returns>Input date if valid in the DB, or Null if date is
/// too early to be DB compatible.</returns>
public static DateTime? ToNullIfTooEarlyFor...