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Define static method in source-file with declaration in header-file in C++
...uments of static function. They are not class members. There is no need of converting them to static.
– 999k
Dec 9 '14 at 11:08
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Focusable EditText inside ListView
..., but it works for me, and gives a pretty solid user experience. I looked into the code for ListView to see why the two behaviors are so different, and came across this from ListView.java:
public void setItemsCanFocus(boolean itemsCanFocus) {
mItemsCanFocus = itemsCanFocus;
if ...
Right query to get the current number of connections in a PostgreSQL DB
... * from
(select count(*) used from pg_stat_activity) q1,
(select setting::int res_for_super from pg_settings where name=$$superuser_reserved_connections$$) q2,
(select setting::int max_conn from pg_settings where name=$$max_connections$$) q3;
...
When should I use C++ private inheritance?
Unlike protected inheritance, C++ private inheritance found its way into mainstream C++ development. However, I still haven't found a good use for it.
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How to 'insert if not exists' in MySQL?
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use INSERT IGNORE INTO table
see http://bogdan.org.ua/2007/10/18/mysql-insert-if-not-exists-syntax.html
there's also INSERT … ON DUPLICATE KEY UPDATE syntax, you can find explanations on dev.mysql.com
Post from bogdan.org.ua according t...
Selecting multiple columns in a pandas dataframe
...n interface to NumPy's usual __getitem__ syntax. That said, you can easily convert a column-slicing problem into a row-slicing problem by just applying a transpose operation, df.T. Your example uses columns[1:3], which is a little misleading. The result of columns is a Series; be careful not to just...
What is the purpose of the “final” keyword in C++11 for functions?
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Thanks! this is the point I was missing : ie that even your "leaf" classes need to mark their function as virtual even if they intend to override functions, and not to be overridden themselves
– lezebulon
Jan...
JavaScript: Check if mouse button down?
...garding Pax' solution: it doesn't work if user clicks more than one button intentionally or accidentally. Don't ask me how I know :-(.
The correct code should be like that:
var mouseDown = 0;
document.body.onmousedown = function() {
++mouseDown;
}
document.body.onmouseup = function() {
--mous...
How to know user has clicked “X” or the “Close” button?
...MMAND
public bool ClosedByXButtonOrAltF4 {get; private set;}
private const int SC_CLOSE = 0xF060;
private const int WM_SYSCOMMAND = 0x0112;
protected override void WndProc(ref Message msg)
{
if (msg.Msg == WM_SYSCOMMAND && msg.WParam.ToInt32() == SC_CLOSE)
ClosedByXButtonOrAltF4 ...
How do I remove the old history from a git repository?
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@Jez you can convert your shallow repo into normal one by running git filter-branch -- --all. This will change all hashes in it but after that you will be able to push it to a new repo
– Ed'ka
Jan 26...