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How to delete a whole folder and content?
...xternalStorageDirectory()+"Dir_name_here");
if (dir.isDirectory())
{
String[] children = dir.list();
for (int i = 0; i < children.length; i++)
{
new File(dir, children[i]).delete();
}
}
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...
Understanding Spliterator, Collector and Stream in Java 8
...ectors include:
summing, e.g. Collectors.reducing(0, (x, y) -> x + y)
StringBuilder appending, e.g. Collector.of(StringBuilder::new, StringBuilder::append, StringBuilder::append, StringBuilder::toString)
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...
Is there a way to crack the password on an Excel VBA Project?
...te Declare Function GetModuleHandleA Lib "kernel32" (ByVal lpModuleName As String) As Long
Private Declare Function GetProcAddress Lib "kernel32" (ByVal hModule As Long, _
ByVal lpProcName As String) As Long
Private Declare Function DialogBoxParam Lib "user32" Alias "DialogBoxParamA" (ByVa...
How to check if a symlink exists
...
How about using readlink?
# if symlink, readlink returns not empty string (the symlink target)
# if string is not empty, test exits w/ 0 (normal)
#
# if non symlink, readlink returns empty string
# if string is empty, test exits w/ 1 (error)
simlink? () {
test "$(readlink "${1}")";
}
FILE...
Regex to match a digit two or four times
...
@Dan: These regexes do not match the complete string "333". You may be using your regex library's "find matching substring" functionality by mistake, rather than its "check if complete string matches" functionality. You should consult its documentation.
...
How to set TextView textStyle such as bold, italic
... have two options:
Option 1 (only works for bold, italic and underline):
String s = "<b>Bolded text</b>, <i>italic text</i>, even <u>underlined</u>!"
TextView tv = (TextView)findViewById(R.id.THE_TEXTVIEW_ID);
tv.setText(Html.fromHtml(s));
Option 2:
Use a Spa...
Tool to read and display Java .class versions
...version.
import java.io.*;
public class Demo {
public static void main(String[] args) throws IOException {
ClassLoader loader = Demo.class.getClassLoader();
try (InputStream in = loader.getResourceAsStream("Demo.class");
DataInputStream data = new DataInputStream(in)) {
if ...
jQuery selector regular expressions
...elements
});
If you want to select elements which id is not a given string
$("input[id!='DiscountType']").each(function (i, el) {
//It'll be an array of elements
});
If you want to select elements which name contains a given word, delimited by spaces
$("input[name~=...
Favorite way to create an new IEnumerable sequence from a single value?
...equence, it's a sequence with one element. To create an empty sequence of strings you can do
var sequence = Enumerable.Empty<string>();
EDIT OP clarified they were looking to create a single value. In that case
var sequence = Enumerable.Repeat("abc",1);
...
How do I make a column unique and index it in a Ruby on Rails migration?
...
or
rails generate migration add_column_name_to_table_name column_name:string:uniq:index
generates
class AddIndexToModerators < ActiveRecord::Migration
def change
add_column :moderators, :username, :string
add_index :moderators, :username, unique: true
end
end
If you're addin...