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viewWillDisappear: Determine whether view controller is being popped or is showing a sub-view contro
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NSArray *viewControllers = self.navigationController.viewControllers;
if (viewControllers.count > 1 && [viewControllers objectAtIndex:viewControllers.count-2] == self) {
// View is disappearing because a new view controller was pushed onto the stack
NSLog(@"New view controlle...
Include all existing fields and add new fields to document
...The $addFields stage is equivalent to a $project stage that explicitly specifies all existing fields in the input documents and adds the new fields.
db.collection.aggregate([
{ "$addFields": { "custom_field": "$obj.obj_field1" } }
])
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Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
... approach will use the actual boolean type (and resolve to true and false) if the compiler supports it. (specifically, C++)
However, it would be better to check whether C++ is in use (via the __cplusplus macro) and actually use true and false.
In a C compiler, this is equivalent to 0 and 1.
(note ...
Changing the image source using jQuery
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You can use jQuery's attr() function. For example, if your img tag has an id attribute of 'my_image', you would do this:
<img id="my_image" src="first.jpg"/>
Then you can change the src of your image with jQuery like this:
$("#my_image").attr("src","second.jpg");
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Resolve Type from Class Name in a Different Assembly
....Domain.Model." + myClassName + ", AssemblyName");
To avoid ambiguity or if the assembly is located in the GAC, you should provide a fully qualified assembly name like such:
Type.GetType("System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089");
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Accessing a Shared File (UNC) From a Remote, Non-Trusted Domain With Credentials
... to map a drive.
This will allow you to connect to a remote machine, even if it is not on the same domain, and even if it has a different username and password.
Once you have used WNetUseConnection you will be able to access the file via a UNC path as if you were on the same domain. The best way...
Gradle, “sourceCompatibility” vs “targetCompatibility”?
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Since Java 9 there is now a new javac option --release intended to address this problem, by only allowing use of API available in the specified Java version. For more on this see stackoverflow.com/a/43103038/4653517
– James M...
Using “label for” on radio buttons
...answer. Both of Martha examples are perfectly valid HTML5. And for example if You want the whole thing to be in a frame, it is easier to style second one using css. If You want labels to be somewhere else, first one. But both are OK. Best regards!
– Jacek Kowalewski
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Creating .pem file for APNS?
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I have followed the above steps and now its working.I have kept the certificate and the php script on my local web server (Xampp). I am able to get the device token , and i am using it in the php script. The php script is able to connect and send payload data....
Start may not be called on a promise-style task. exception is coming
...ask.Run or Task.Factory.StartNew to both create and start a new Task.
So, now we know to just get rid of that pesky Start. You'll run your code and find that the message box is shown right away, not 5 seconds later, what's up with that?
Well, Task.Delay just gives you a task that will be complete...