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How to take screenshot of a div with JavaScript?
...ock waits for the button with the id btnSave to be clicked. When it is, it converts the widget div to a canvas element and then uses the saveAs() FileSaver interface (via FileSaver.js in browsers that don't support it natively) to save the div as an image named "Dashboard.png".
An example of this ...
Check if item is in an array / list
... are going to be doing repeated checks on the list, then it might be worth converting it to a set or frozenset, which can be faster for each check. Assuming your list of strs is called subjects:
subject_set = frozenset(subjects)
if query in subject_set:
# whatever
...
Why does Lua have no “continue” statement?
...
In Lua 5.2 the best workaround is to use goto:
-- prints odd numbers in [|1,10|]
for i=1,10 do
if i % 2 == 0 then goto continue end
print(i)
::continue::
end
This is supported in LuaJIT since version 2.0.1
...
MySQL: Set user variable from result of query
...
Yes, but you need to move the variable assignment into the query:
SET @user := 123456;
SELECT @group := `group` FROM user WHERE user = @user;
SELECT * FROM user WHERE `group` = @group;
Test case:
CREATE TABLE user (`user` int, `group` int);
INSERT INTO user VALUES (12345...
Setting a timeout for socket operations
...
Use the Socket() constructor, and connect(SocketAddress endpoint, int timeout) method instead.
In your case it would look something like:
Socket socket = new Socket();
socket.connect(new InetSocketAddress(ipAddress, port), 1000);
Quoting from the documentation
connect
public...
Using Excel OleDb to get sheet names IN SHEET ORDER
...ced through the comments that there are a lot of concerns about using the Interop classes to retrieve the sheet names. Therefore here is an example using OLEDB to retrieve them:
/// <summary>
/// This method retrieves the excel sheet names from
/// an excel workbook.
/// </summary>
//...
deleting rows in numpy array
... [ 0.78008333, 0.5938125, 0.481, 0.39883333, 0.]])
>>> print arr[arr.all(1)]
array([[ 0.96488889, 0.73641667, 0.67521429, 0.592875 , 0.53172222]])
By the way, this method is much, much faster than the masked array method for large matrices. For a 2048 x 5 matrix, this method...
Missing include “bits/c++config.h” when cross compiling 64 bit program on 32 bit in Ubuntu
...ou want to change a 64 bit ELF to 32 bit ELF and it is showing error while converting.
You can simply run the commands
apt-get install gcc-multilib g++-multilib
which will update your libraries
Packages upgraded:
The following additional packages will be installed:
g++-8-multilib gcc-8-m...
Parse string to date with moment.js
...'s string is in a standard Date format. Stephen Paul's answer shows how to convert any string, given a specific format, to a date that can be manipulated.
– Agamemnus
Mar 23 '19 at 21:05
...
Is there a way to make ellipsize=“marquee” always scroll?
...iew all focused.
@Override
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
if(focused)
super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
@Override
public void onWindowFocusChanged(boolean focused) {
if(focused)
su...