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What does enctype='multipart/form-data' mean?
...n some way.
HTML forms provide three methods of encoding.
application/x-www-form-urlencoded (the default)
multipart/form-data
text/plain
Work was being done on adding application/json, but that has been abandoned.
(Other encodings are possible with HTTP requests generated using other means t...
Java 8: Where is TriFunction (and kin) in java.util.function? Or what is the alternative?
...uctive one destroys something, but not in the way you may think now.
For example, the function
Function<Integer,Integer> f = (x,y) -> x + y
is a constructive one.
As you need to construct something. In the example
you constructed the tuple (x,y). Constructive functions have the prob...
What Automatic Resource Management alternatives exist for Scala?
I have seen many examples of ARM (automatic resource management) on the web for Scala. It seems to be a rite-of-passage to write one, though most look pretty much like one another. I did see a pretty cool example using continuations, though.
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How to declare an ArrayList with values? [duplicate]
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In Java 9+ you can do:
var x = List.of("xyz", "abc");
// 'var' works only for local variables
Java 8 using Stream:
Stream.of("xyz", "abc").collect(Collectors.toList());
And of course, you can create a new object using the constructor that acce...
Python data structure sort list alphabetically
...can sort it like this:
In [1]: lst = ['Stem', 'constitute', 'Sedge', 'Eflux', 'Whim', 'Intrigue']
In [2]: sorted(lst)
Out[2]: ['Eflux', 'Intrigue', 'Sedge', 'Stem', 'Whim', 'constitute']
As you can see, words that start with an uppercase letter get preference over those starting with a lowercase...
What are best practices for validating email addresses on iOS 2.0
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The answer to Using a regular expression to validate an email address explains in great detail that the grammar specified in RFC 5322 is too complicated for primitive regular expressions.
I recommend a real parser approach like MKEmailAddress.
As quick r...
How to format a floating number to fixed width in Python
How do I format a floating number to a fixed width with the following requirements:
7 Answers
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How to get a vertical geom_vline to an x-axis of class date?
Even though I found Hadley's post in the google group on POSIXct and geom_vline , I could not get it done. I have a time series from and would like to draw a vertical line for years 1998, 2005 and 2010 for example. I tried with ggplot and qplot syntax, but still I either see no vertical line ...
How to insert a character in a string at a certain position?
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int j = 123456;
String x = Integer.toString(j);
x = x.substring(0, 4) + "." + x.substring(4, x.length());
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What is the difference between svg's x and dx attribute?
What is the difference between svg's x and dx attribute (or y and dy)? When would be a proper time to use the axis shift attribute (dx) versus the location attribute (x)?
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