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Creating Unicode character from its number
...parse characters that are larger than a char. scala> "????????".map(_.toInt).flatMap((i: Int) => Character.toChars(i)).map(_.toHexString) gives res11: scala.collection.immutable.IndexedSeq[String] = Vector(f468, 200d, f3a8) This emoji, "male singer", is addressed with the three code point...
How to dismiss keyboard for UITextView with return key?
...n Xcode 6.4 , Swift 2.0. I set the key using IB.
– MB_iOSDeveloper
Jul 9 '15 at 7:20
|
show 3 more comments
...
Fastest way to check if a string matches a regexp in ruby?
...y
require 'benchmark'
str = "aacaabc"
re = Regexp.new('a+b').freeze
N = 4_000_000
Benchmark.bm do |b|
b.report("str.match re\t") { N.times { str.match re } }
b.report("str =~ re\t") { N.times { str =~ re } }
b.report("str[re] \t") { N.times { str[re] } }
b.report("re =~ str...
Rails 3.1: Engine vs. Mountable App
... app? In Rails 3.1, you can create either one with the "rails new plugin ___ " command.
5 Answers
...
Using backticks around field names
... double quotes. It will not always work. For instance... DELETE FROM app_key_stores WHERE ("key" = 'c5cc4f30-31f3-0130-505e-14dae9da9fc5_range'); Query OK, 0 rows affected (0.00 sec) DELETE FROM app_key_stores WHERE (key = 'c5cc4f30-31f3-0130-505e-14dae9da9fc5_range'); Query OK, 5 rows affected ...
CSS: Change image src on img:hover
... <img src="https://cdn4.iconfinder.com/data/icons/imoticons/105/imoticon_15-128.png" />
<img src="https://cdn4.iconfinder.com/data/icons/imoticons/105/imoticon_12-128.png" />
</a>
CSS
a img:last-child {
display: none;
}
a:hover img:last-child {
display: block;
}
a:ho...
Entity Framework Code First - two Foreign Keys from same table
...delete the Team Then it is throwing error. A relationship from the 'Team_HomeMatches' AssociationSet is in the 'Deleted' state. Given multiplicity constraints, a corresponding 'Team_HomeMatches_Target' must also in the 'Deleted' state.
– Rupesh Kumar Tiwari
...
Sort array of objects by string property value
...ite your own comparison function:
function compare( a, b ) {
if ( a.last_nom < b.last_nom ){
return -1;
}
if ( a.last_nom > b.last_nom ){
return 1;
}
return 0;
}
objs.sort( compare );
Or inline (c/o Marco Demaio):
objs.sort((a,b) => (a.last_nom > b.last_nom) ? 1 :...
How to find first element of array matching a boolean condition in JavaScript?
... its find and indexOf functions to get exactly what you want:
var index = _.indexOf(your_array, _.find(your_array, function (d) {
return d === true;
}));
Documentation:
http://underscorejs.org/#find
http://underscorejs.org/#indexOf
...
What are bitwise shift (bit-shift) operators and how do they work?
...d |
To get at the green value you would do this:
#define GREEN_MASK 0x7E0
#define GREEN_OFFSET 5
// Read green
uint16_t green = (pixel & GREEN_MASK) >> GREEN_OFFSET;
Explanation
In order to obtain the value of green ONLY, which starts at offset 5 and ends at 10 (i.e. ...