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Calculate difference in keys contained in two Python dictionaries
Suppose I have two Python dictionaries - dictA and dictB . I need to find out if there are any keys which are present in dictB but not in dictA . What is the fastest way to go about it?
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Xcode 6 / Beta 4: using bridging headers with framework targets is unsupported
...n Frameworks. The Importing Code from Within the Same Framework Target section of the Mix & Match apple documentation hints at this. As they say, you need to "In your umbrella header file, import every Objective-C header you want to expose to Swift".
However, I discovered that you may also nee...
How to detect the device orientation using CSS media queries?
In JavaScript the orientation mode can be detected using:
5 Answers
5
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Why is @autoreleasepool still needed with ARC?
...ool and how it introduces a scope is used by the compiler to infer information about what retains, releases & autoreleases are required.
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wget/curl large file from google drive
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WARNING: This functionality is deprecated. See warning below in comments.
Have a look at this question: Direct download from Google Drive using Google Drive API
Basically you have to create a public directory and access your files by relat...
Count(*) vs Count(1) - SQL Server
...ce.
Reason:
Books on-line says "COUNT ( { [ [ ALL | DISTINCT ] expression ] | * } )"
"1" is a non-null expression: so it's the same as COUNT(*).
The optimizer recognizes it for what it is: trivial.
The same as EXISTS (SELECT * ... or EXISTS (SELECT 1 ...
Example:
SELECT COUNT(1) FROM dbo.t...
Advantages and disadvantages of GUID / UUID database keys
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Advantages:
Can generate them offline.
Makes replication trivial (as opposed to int's, which makes it REALLY hard)
ORM's usually like them
Unique across applications. So We can use the PK's from our CMS (guid) in our app (also guid) and know we are NEVER going to get a clash.
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HttpURLConnection timeout settings
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HttpURLConnection has a setConnectTimeout method.
Just set the timeout to 5000 milliseconds, and then catch java.net.SocketTimeoutException
Your code should look something like this:
try {
HttpURLConnection.setFollowRedirects(false...
Access properties file programmatically with Spring?
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here is a question, how is this different from mine, and has two more votes AND posted second...
– Zoidberg
Nov 20 '09 at 16:07
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Django - how to create a file and save it to a model's FileField?
...opdf's convert_to_pdf command. Thank you!!
– Nostalg.io
Sep 1 '16 at 4:53
In addition to this, I got an error if I don...