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How does the const constructor actually work?
...in Dart is really an anonymous storage location combined with
an automatically created getter and setter that reads and updates the
storage, and it can also be initialized in a constructor's initializer
list.
A final field is the same, just without the setter, so the only way to
set it...
Replace multiple characters in one replace call
...
If you want to replace multiple characters you can call the String.prototype.replace() with the replacement argument being a function that gets called for each match. All you need is an object representing the character mapping which you will use in that function.
For exampl...
How to pull request a wiki page on GitHub?
...hub account:
Create a new repository on your github account. Let's call it "Taffy-Wiki".
Clone the Taffy wiki repo to your local machine somewhere: git clone git@github.com:atuttle/Taffy.wiki.git
Remove the original "origin" remote and add your github repo as new "origin" git remote rm o...
Redirect From Action Filter Attribute
...redirect in an ActionFilterAttribute . I have an ActionFilterAttribute called IsAuthenticatedAttributeFilter and that checked the value of a session variable. If the variable is false, I want the application to redirect to the login page. I would prefer to redirect using the route name Syst...
how to put focus on TextBox when the form load?
...ents and double click the "Shown" event. In the form's shown event handler call the control.Focus() method.
private void myForm_Shown(object sender, EventArgs e)
{
// Call textbox's focus method
txtMyTextbox.Focus();
}
...
What's the difference between an inverted index and a plain old index?
...hey arise. My question was: "why did the people who named inverted indexes call them inverted when we have a long standing tradition which calls them just plain indexes? For example, indexes at the end of books, as you point out, are actually inverted. Going by historical perspective, the indexes at...
Why do you need to put #!/bin/bash at the beginning of a script file?
.../bin/perl or #!/bin/perl5.
PS:
The exclamation mark (!) is affectionately called "bang". The shell comment symbol (#) is sometimes called "hash".
PPS:
Remember - under *nix, associating a suffix with a file type is merely a convention, not a "rule". An executable can be a binary program, any one...
Does reading an entire file leave the file handle open?
...e, in an expression, and becomes inaccessible immediately after the read() call returns.
This means that the file object is garbage. The only remaining question is "When will the garbage collector collect the file object?".
in CPython, which uses a reference counter, this kind of garbage is notic...
C fopen vs open
... that case it's even better to use pread instead of a seek/read pair (1 syscall instead of 2).
– Patrick Schlüter
May 5 '10 at 13:16
2
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dpi value of default “large”, “medium” and “small” text views android
...
See in the android sdk directory.
In \platforms\android-X\data\res\values\themes.xml:
<item name="textAppearanceLarge">@android:style/TextAppearance.Large</item>
<item name="textAppearanceMedium">@android:style/Te...