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Elegant way to invert a map in Scala
... )(implicit ev :C[V] => TraversableOnce[V]) {
def invert(implicit bf :CanBuildFrom[Nothing,K,C[K]]) :Map[V,C[K]] =
m.foldLeft(Map.empty[V, Builder[K,C[K]]]) {
case (acc, (k, vs)) =>
vs.foldLeft(acc) {
case (a, v) => a + (v -> (a.getOrElse(v,bf()) += k))
...
Count number of days between two dates
...tly from the console.
Try this
<% start_time = "2012-03-02 14:46:21 +0100" %>
<% end_time = "2012-04-02 14:46:21 +0200" %>
<%= distance_of_time_in_words(start_time, end_time) %>
"about 1 month"
sh...
Url decode UTF-8 in Python
...from urllib.parse import unquote
>>> url = 'example.com?title=%D0%BF%D1%80%D0%B0%D0%B2%D0%BE%D0%B2%D0%B0%D1%8F+%D0%B7%D0%B0%D1%89%D0%B8%D1%82%D0%B0'
>>> unquote(url)
'example.com?title=правовая+защита'
The Python 2 equivalent is urllib.unquote(), but this returns a ...
Java and SQLite [closed]
...
zentus.com seems broken, found mirror here; priede.bf.lu.lv/pub/DatuBazes/SQLite/SqliteJDBC/about.htm
– Daniel Magnusson
Sep 5 '12 at 7:55
3
...
How can I create a UILabel with strikethrough text?
... 0x09,
NSUnderlinePatternSolid = 0x0000,
NSUnderlinePatternDot = 0x0100,
NSUnderlinePatternDash = 0x0200,
NSUnderlinePatternDashDot = 0x0300,
NSUnderlinePatternDashDotDot = 0x0400,
NSUnderlineByWord = 0x8000
} NSUnderlineStyle;
...
Trying to login to RDP using AS3
... byte
//write short is setbigendian 16 //
dataBuffer.writeShort(0x0100); // writing big-endian 0x01
var be:ByteArray=new ByteArray();
be.endian=Endian.BIG_ENDIAN; // create big-endian array for the data that's not static
be.writeShort(length | 0x8000); // remaining length
da...
What's the simplest way to test whether a number is a power of 2 in C++?
...
Powers of two in binary look like this:
1: 0001
2: 0010
4: 0100
8: 1000
Note that there is always exactly 1 bit set. The only exception is with a signed integer. e.g. An 8-bit signed integer with a value of -128 looks like:
10000000
So after checking that the number is greater t...
Why are Docker container images so large?
...layers. To get around this you must clean at each layer.
$ docker history bf5260c6651d
IMAGE CREATED CREATED BY SIZE
bf5260c6651d 4 days ago /bin/sh -c yum -y install git; yum -y clean a 260.7 MB
172743bd5d60 4 ...
Efficiently replace all accented characters in a string?
...ers':/[\u0041\u24B6\uFF21\u00C0\u00C1\u00C2\u1EA6\u1EA4\u1EAA\u1EA8\u00C3\u0100\u0102\u1EB0\u1EAE\u1EB4\u1EB2\u0226\u01E0\u00C4\u01DE\u1EA2\u00C5\u01FA\u01CD\u0200\u0202\u1EA0\u1EAC\u1EB6\u1E00\u0104\u023A\u2C6F]/g},
{'base':'AA','letters':/[\uA732]/g},
{'base':'AE','letters':/[\u00C6\u01FC\...
Convert object string to JSON
...px
var jsontext = '{"firstname":"Jesper","surname":"Aaberg","phone":["555-0100","555-0120"]}';
var contact = JSON.parse(jsontext);
and reverse
var str = JSON.stringify(arr);
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