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How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
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If I understand the question correctly, you want to update a document with the contents of another document, but only the fields that are not already present, and completely ignore the fields that are already set (even if to another value).
There is no way to do that in a single command.
You h...
UIView with rounded corners and drop shadow?
....layer setShadowColor:[UIColor blackColor].CGColor];
[v.layer setShadowOpacity:0.8];
[v.layer setShadowRadius:3.0];
[v.layer setShadowOffset:CGSizeMake(2.0, 2.0)];
You can adjust the settings to suit your needs.
Also, add the QuartzCore framework to your project and:
#import <QuartzCore/Quart...
Selecting multiple columns in a pandas dataframe
I have data in different columns but I don't know how to extract it to save it in another variable.
18 Answers
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WAMP shows error 'MSVCR100.dll' is missing when install
...ual C++ Redistributable for Visual Studio 2012 Update 4
You can download it at:
https://www.microsoft.com/en-us/download/details.aspx?id=30679
There you can select the x86 or x64 version depending on your system
This article on the WampServer forums shows all the Microsoft Visual C++ runtime...
How do short URLs services work?
... TinyURL or Metamark work?
Do they simply associate the tiny URL key with a [virtual?] web page which merely provide an "HTTP redirect" to the original URL? or is there more "magic" to it ?
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How to create a file in memory for user to download, but not through server?
... can create a text file on the client side and prompt the user to download it, without any interaction with the server?
I know I can't write directly to their machine (security and all), but can I create and prompt them to save it?
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How can I close a Twitter Bootstrap popover with a click from anywhere (else) on the page?
I'm currently using popovers with Twitter Bootstrap, initiated like this:
31 Answers
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Android check internet connection [duplicate]
...rying to create a function that checks if a connection is available and if it isn't, go to an activity that has a retry button and an explanation.
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Getting values from query string in an url using AngularJS $location
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Not sure if it has changed since the accepted answer was accepted, but it is possible.
$location.search() will return an object of key-value pairs, the same pairs as the query string. A key that has no value is just stored in the object...
JPA EntityManager: Why use persist() over merge()?
EntityManager.merge() can insert new objects and update existing ones.
15 Answers
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