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What does the “@” symbol mean in reference to lists in Haskell?
...hout the @, you'd have to choose between (1) or (2):(3).
This syntax actually works for any constructor; if you have data Tree a = Tree a [Tree a], then t@(Tree _ kids) gives you access to both the tree and its children.
s...
Ruby combining an array into one string
In Ruby is there a way to combine all array elements into one string?
3 Answers
3
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Array include any value from another array?
....include?(food) }
=> true
Benchmark script:
require "benchmark"
N = 1_000_000
puts "ruby version: #{RUBY_VERSION}"
CHEESES = %w(chedder stilton brie mozzarella feta haloumi).freeze
FOODS = %w(pizza feta foods bread biscuits yoghurt bacon).freeze
Benchmark.bm(15) do |b|
b.report("&, emp...
How to select/get drop down option in Selenium 2
..."//path_to_drop_Down")).Count();
for(int i = 1; i <= items; i++)
{
string value = driver.FindElement(By.XPath("//path_to_drop_Down/option["+i+"]")).GetAttribute("Value1");
if(value.Conatains("Label_I_am_Looking_for"))
{
driver.FindElement(By.XPath("//path_to_drop_Down/option[...
How to pass multiple parameters in a querystring
...
Query_string
(Following is the text of the linked section of the Wikipedia entry.)
Structure
A typical URL containing a query string is as follows:
http://server/path/program?query_string
When a server receives a request for such a...
bool to int conversion
... 1, 4>5 would evaluate to 0.
EDIT: Jens in the comment said, C99 has _Bool type. bool is a macro defined in stdbool.h header file. true and false are also macro defined in stdbool.h.
§7.16 from C99 says,
The macro bool expands to _Bool.
[..] true which expands to the integer constan...
PostgreSQL: How to make “case-insensitive” query
...
Use LOWER function to convert the strings to lower case before comparing.
Try this:
SELECT id
FROM groups
WHERE LOWER(name)=LOWER('Administrator')
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Regular expression search replace in Sublime Text 2
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Important: Use the ( ) parentheses in your search string
While the previous answer is correct there is an important thing to emphasize! All the matched segments in your search string that you want to use in your replacement string must be enclosed by ( ) parentheses, other...
Is there a UIView resize event?
...ervingBounds() {
boundsObservation = observe(\.bounds) { capturedSelf, _ in
// ...
}
}
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How do I find if a string starts with another string in Ruby?
What the best way to find if a string starts with another in Ruby (without rails)?
4 Answers
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