大约有 40,000 项符合查询结果（耗时：0.0515秒） [XML]
Ruby on Rails - Import Data from a CSV file
...
require 'csv'
csv_text = File.read('...')
csv = CSV.parse(csv_text, :headers => true)
csv.each do |row|
Moulding.create!(row.to_hash)
end
share
|
...
How do I iterate over a JSON structure? [duplicate]
...
Similarly, lodash offers _.forEach (alias _.each for underscore compatibility) to accomplish the same.
– Ville
Oct 25 '14 at 5:29
...
How do I print a double value with full precision using cout?
...cision of a float or double.
#include <limits>
typedef std::numeric_limits< double > dbl;
double d = 3.14159265358979;
cout.precision(dbl::max_digits10);
cout << "Pi: " << d << endl;
share
...
Passing a dictionary to a function as keyword parameters
...
This is great, just used it with argparse/__dict__ to make it really easy to do command line argument parsing directly into options for a class object.
– Horus
Jun 14 '12 at 3:47
...
NSInvocation for Dummies?
...y Ryan's note, index 0 is reserved for "self" and index 1 is reserved for "_cmd" (see the link e.James posted for more detail). So your first argument gets placed at index 2, second argument at index 3, etc...
– Dave
Jul 11 '10 at 20:47
...
Ruby capitalize every word first letter
...s:
"kirk douglas".titleize => "Kirk Douglas"
#this also works for 'kirk_douglas'
w/o Rails:
"kirk douglas".split(/ |\_/).map(&:capitalize).join(" ")
#OBJECT IT OUT
def titleize(str)
str.split(/ |\_/).map(&:capitalize).join(" ")
end
#OR MONKEY PATCH IT
class String
def titleize...
Do sealed classes really offer performance Benefits?
... Release build configuration) emits identical MSIL, which is as follows:
L_0000: newobj instance void <NormalClass or SealedClass>::.ctor()
L_0005: stloc.0
L_0006: ldloc.0
L_0007: ldstr "a string"
L_000c: callvirt instance void <NormalClass or SealedClass>::WriteIt(string)
L_0011: ret...
Why can I initialize a List like an array in C#?
...ctions do:
public class MyProgram
{
private SomeCollection<int> _myCollection = new SomeCollection<int> { 13, 5, 7 };
// ...
}
(For more information, see the MSDN)
share
|
...
Add a property to a JavaScript object using a variable as the name?
...
With lodash, you can create new object like this _.set:
obj = _.set({}, key, val);
Or you can set to existing object like this:
var existingObj = { a: 1 };
_.set(existingObj, 'a', 5); // existingObj will be: { a: 5 }
You should take care if you want to use dot (".") i...
Can someone explain the right way to use SBT?
...= taskKey[Unit]("Fetch meaning of life")
fooTask := {
import scalaj.http._ // error: cannot resolve symbol
val response = Http("http://example.com").asString
...
}
However this will error saying missing import scalaj.http._. How is this possible when we, right above, added scalaj-http to lib...