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What does enumerable mean?
...his condition is in place because objects have many more properties, especially from inheritance:
console.log(Object.getOwnPropertyNames(Object.prototype));
// ["constructor", "toString", "toLocaleString", "valueOf", "hasOwnProperty", "isPrototypeOf", "propertyIsEnumerable", /* etc. */]
Each of t...
Big O, how do you calculate/approximate it?
..., but be warned that this topic takes my students a couple of months to finally grasp. You can find more information on the Chapter 2 of the Data Structures and Algorithms in Java book.
There is no mechanical procedure that can be used to get the BigOh.
As a "cookbook", to obtain the BigOh from ...
Value Change Listener to JTextField
...
Add a listener to the underlying Document, which is automatically created for you.
// Listen for changes in the text
textField.getDocument().addDocumentListener(new DocumentListener() {
public void changedUpdate(DocumentEvent e) {
warn();
}
public void removeUpdate(DocumentE...
CSS center text (horizontally and vertically) inside a div block
...al align".
Since they tend to be hacks or adding complicated divs... I usually use a table with a single cell to do it... to make it as simple as possible.
Update for 2020:
Unless you need make it work on earlier browsers such as Internet Explorer 10, you can use flexbox. It is widely supported...
Daylight saving time and time zone best practices [closed]
...hanged from the original value recorded.
When scheduling future events, usually local time is preferred instead of UTC, as it is common for the offset to change. See answer, and blog post.
When storing whole dates, such as birthdays and anniversaries, do not convert to UTC or any other time zone.
...
Is there a format code shortcut for Visual Studio?
...s, e.g. I have set Add/remove braces for single-line control statements (really bad description because the user has no idea what happens when you activate it^^) so the formatter always changes if(foo) bar; to if(foo) { bar; }. executing Edit.FormatSelection doesn’t change that. Might be a bug, go...
Can't operator == be applied to generic types in C#?
...perator ==(Test a, Test b)
{
Console.WriteLine("Overloaded == called");
return a.Equals(b);
}
public static bool operator !=(Test a, Test b)
{
Console.WriteLine("Overloaded != called");
return a.Equals(b);
}
}
}
Output
Inline:
Overloaded == c...
How to install packages offline?
... download a python package and it's dependencies from pypi for offline installation on another machine? Is there any easy way to do this with pip or easy_install? I'm trying to install the requests library on a FreeBSD box that is not connected to the internet.
...
Where should I put tags in HTML markup?
...ace to put the <script> tags and included JavaScript? I seem to recall that you are not supposed to place these in the <head> section, but placing at the beginning of the <body> section is bad, too, since the JavaScript will have to be parsed before the page is rendered compl...
Centering controls within a form in .NET (Winforms)? [duplicate]
...
Great, I never thought about quit all sides on Anchor property, now if I resize the control keeps centered. !great!
– FabianSilva
Mar 23 '12 at 13:52
...