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differentiate null=True, blank=True in django
...y conclusions from the data presented, but I don't think that presenting a raw data dump is a useful answer. In this case it is actually a misleading answer, since (without further comment) it implies that the effect of both blank and null should be reflected in the database columns, when in fact bl...
Python syntax for “if a or b or c but not all of them”
I have a python script that can receive either zero or three command line arguments. (Either it runs on default behavior or needs all three values specified.)
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Why do you create a View in a database?
When and Why does some one decide that they need to create a View in their database? Why not just run a normal stored procedure or select?
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How to map a composite key with JPA and Hibernate?
...y the specification also applies. So here they are:
2.1.4 Primary Keys and Entity Identity
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A composite primary key must
correspond to either a single
persistent field or property or to a
set of such fields or properties as
described below. A primary key class
must be defi...
Saving and Reading Bitmaps/Images from Internal memory in Android
...that you write it again, i suppose you have that image data as a bitmap or raw data in the form of byte-array. If you have bitmap, you can directly utilize the above functions. If you have it in the form of byte array, use this to convert it to bitmap Bitmap bitmap = BitmapFactory.decodeByteArray(bi...
Downloading a Google font and setting up an offline site that uses it
I have a template and it has a reference to a Google font like this:
11 Answers
11
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How can I select rows with most recent timestamp for each key value?
I have a table of sensor data. Each row has a sensor id, a timestamp, and other fields. I want to select a single row with latest timestamp for each sensor, including some of the other fields.
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iOS: how to perform a HTTP POST request?
...print("error")
return
}
//Get the raw response string
let dataString = String(data: data!, encoding: String.Encoding(rawValue: String.Encoding.utf8.rawValue))
//Print the response
print(dataString!)
}
//r...
What is the difference between a strongly typed language and a statically typed language?
...time error. Weak: "c" + True = "b" or "d" because everything is treated as raw bytes. Strong: C#, Ruby, C++ Weak: Assembly, C (due to implicit void pointers)
– Jonathan Allen
Apr 23 '10 at 5:27
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Git for beginners: The definitive practical guide
...k, after seeing this post by PJ Hyett , I have decided to skip to the end and go with Git .
37 Answers
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