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How to check an Android device is HDPI screen or MDPI screen?
...
As of 2018, you can use the below method -
public static String getDeviceDensityString(Context context) {
switch (context.getResources().getDisplayMetrics().densityDpi) {
case DisplayMetrics.DENSITY_LOW:
return "ldpi";
case DisplayMetrics.DENSITY_MED...
How to print out the method name and line number and conditionally disable NSLog?
...t that (@"%s [Line %d] " fmt) causes the fmt to be appended to the control string? I haven't seen this syntax other than is this debug macro.
– Robert Altman
May 1 '11 at 19:29
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Difference between Inheritance and Composition
...s :
Public class Transaction {
Banking b;
public static void main(String a[])
{
b = new Deposit();
if(b.deposit()){
b = new Credit();
c.credit();
}
}
}
Good to know :
composition is easily achieved at runtime w...
Get value of a string after last slash in JavaScript
...the series of characters not containing a slash" ([^/]*) at the end of the string ($). Then it grabs the matched characters from the returned match object by indexing into it ([0]); in a match object, the first entry is the whole matched string. No need for capture groups.
Live example
Using lastI...
A Regex that will never be matched by anything
...plementation / flags*:
$a
Will match a character a after the end of the string. Good luck.
WARNING:
This expression is expensive -- it will scan the entire line, find the end-of-line anchor, and only then not find the a and return a negative match. (See comment below for more detail.)
* Origi...
GitHub: Reopening a merged pull request
I've now fixed the bug and want to resubmit the pull request with 1 extra commit. Is there any way to reopen the pull request or update it, or do I have to create a new pull request, type out the description etc again? Gitorious has this feature and we've recently moved to GitHub.
...
How do I store an array in localStorage? [duplicate]
...
localStorage only supports strings. Use JSON.stringify() and JSON.parse().
var names = [];
names[0] = prompt("New member name?");
localStorage.setItem("names", JSON.stringify(names));
//...
var storedNames = JSON.parse(localStorage.getItem("names"));...
When to use lambda, when to use Proc.new?
...om :0
irb(main):006:0> p.call "hello"
TypeError: can't convert nil into String
from (irb):2:in `+'
from (irb):2
from (irb):6:in `call'
from (irb):6
from :0
The page also recommends using lambda unless you specifically want the error tolerant behavior. I agree with this senti...
Read file data without saving it in Flask
...d file.stream.read(). Also you can use save argument with dst parameter as StringIO or other IO or file object to copy FileStorage.stream to another IO or file object.
See documentation: http://flask.pocoo.org/docs/api/#flask.Request.files and http://werkzeug.pocoo.org/docs/datastructures/#werkzeug...
Convert a PHP object to an associative array
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It you have integer keys the'll be converted in to string and this can cause big issue. E.g. [1 => "one"] becomes ["1" => "one"]
– Oleg
Aug 11 '15 at 12:16
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