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Is there a read-only generic dictionary available in .NET?
...Note
that if the dictionary you are
cloning contains reference types (
not strings as shown in the example
) you will need to do the copying
"manually" and clone the reference
types as well.
As an aside; when exposing collections, aim to expose the smallest possible interface - in the example case...
Keep overflow div scrolled to bottom unless user scrolls up
... You can get around needing to reverse the content by adding an extra wrapper, and applying overflow:auto; display:flex; flex-direction:column-reverse; to the outer wrapper instead of the inner wrapper.
– Nathan Arthur
Sep 8 '17 at 15:10
...
Filter dataframe rows if value in column is in a set list of values [duplicate]
...e a list of exact matches, but if you have a list of partial matches or substrings to look for, you can filter using the str.contains method and regular expressions.
For example, if we want to return a DataFrame where all of the stock IDs which begin with '600' and then are followed by any three di...
Add a default value to a column through a migration
..., since change_column is irreversible.
Instead, though it may be a couple extra lines, you should use def up and def down
So if you have a column with no default value, then you should do this to add a default value.
def up
change_column :users, :admin, :boolean, default: false
end
def down
...
Iterate over object keys in node.js
...d normally do {add = add.substr(0, level)} of a precreated multi-tab [add] string here, but Sublime keeps replacing with spaces, even with the ["translate_tabs_to_spaces": false] setting!!! (angry)
add += "\t";
}
for (var i = 0; i < len; i++)
{
prop = obj[keys[i]];
...
HTML/CSS: Making two floating divs the same height
...e quotes around the attributes. Also worth noting is that you dont need an extra element with clear on in order to clear the internal floats of the container. If you use overflow hidden this clears the floats in all non-IE browsers and then just adding something to give hasLayout such as width or zo...
How do I remove objects from a JavaScript associative array?
...ways:
delete myObj["SomeProperty"];
delete myObj.SomeProperty;
Hope the extra info helps...
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Authorize Attribute with Multiple Roles
...Attribute : AuthorizeAttribute
{
public AuthorizeRolesAttribute(params string[] roles) : base()
{
Roles = string.Join(",", roles);
}
}
Assuming your roles will be the same for multiple controllers, create a helper class:
public static class Role
{
public const string Admin...
JavaScript post request like a form submit
...pecified url from a form. this will change the window location.
* @param {string} path the path to send the post request to
* @param {object} params the paramiters to add to the url
* @param {string} [method=post] the method to use on the form
*/
function post(path, params, method='post') {
...
leading zeros in rails
...untime. Every language has its own way to pad zeros - for Ruby you can use String#rjust. This method pads a string (right-justified) so that it becomes a given length, using a given padding character.
str.rjust(integer, padstr=' ') → new_str
If integer is greater than the length of str, r...