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What does Html.HiddenFor do?
...nsider the following ViewModel class:
public class ViewModel
{
public string Value { get; set; }
public int Id { get; set; }
}
Now you want the edit page to store the ID but have it not be seen:
<% using(Html.BeginForm() { %>
<%= Html.HiddenFor(model.Id) %><br />
...
How can I merge two hashes without overwritten duplicate keys in Ruby?
...es that we can't judge from the question - what if the values in hash1 are strings and hash2 are integers? For some cases that might be a viable option, but more often it would cause problems- the suggestion of using lists for values works around this quite cleanly.
– glenatron...
When to use Task.Delay, when to use Thread.Sleep?
...at the difference with Thread.Sleep:
class Program
{
static void Main(string[] args)
{
Task delay = asyncTask();
syncCode();
delay.Wait();
Console.ReadLine();
}
static async Task asyncTask()
{
var sw = new Stopwatch();
sw.Start();...
Why does auto a=1; compile in C?
...up comments on this, but I can't find the exact reference right now.)
(*) String handling in B was interesting: you'd use arrays of int and pack multiple characters in each member. B was actually BCPL with different syntax.
...
Is it bad to have my virtualenv directory inside my git repository?
...ith pip install -r requirements.txt. RyanBrady already showed how you can string the deploy statements in a single line:
# before 15.1.0
virtualenv --no-site-packages --distribute .env &&\
source .env/bin/activate &&\
pip install -r requirements.txt
# after deprecation o...
What values should I use for CFBundleVersion and CFBundleShortVersionString?
...
Think of it this way: The "short version" (CFBundleShortVersionString) is the public version number. The "version" (CFBundleVersion) is more of an internal version number that could change far more frequently than the public "short version". Personally I use the same for both but many pe...
How to send file contents as body entity using cURL
...pecting: --header: "<header_name>:<header_value>" as a single string.
– Roy Hinkley
Jul 27 '17 at 18:36
...
What is Scala's yield?
...ommand line arguments to uppercase */
object Main {
def main(args: Array[String]) {
val res = for (a <- args) yield a.toUpperCase
println("Arguments: " + res.toString)
}
}
The corresponding expression in F# would be
[ for a in args -> a.toUpperCase ]
or
from a in args select ...
What is the difference between a var and val definition in Scala?
...B(n: Int) {
val value = new A(n)
}
object Test {
def main(args: Array[String]) {
val x = new B(5)
x = new B(6) // Doesn't work, because I can't replace the object created on the line above with this new one.
x.value = new A(6) // Doesn't work, because I can't replace the object assi...
Detecting a redirect in ajax request?
...t compares it to the url that it originally requested via $.ajax(). If the strings differ, I know there was a redirect, and additionally, what url we actually arrived at.
This does have the drawback of requiring some server-side help, and also may break down if the url gets munged (due to quoting/e...