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Differences between utf8 and latin1
...orted, the remnant not. For all characters, see en.wikipedia.org/wiki/Plane_(Unicode)
– BalusC
Jun 12 '12 at 11:01
2
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PostgreSQL - Rename database
...orce disconnect all other clients from the database to be renamed
SELECT pg_terminate_backend( pid )
FROM pg_stat_activity
WHERE pid <> pg_backend_pid( )
AND datname = 'name of database';
-- rename the database (it should now have zero clients)
ALTER DATABASE "name of database" RENAME TO ...
How to tell when UITableView has completed ReloadData?
...other way is to schedule your after-layout code to run later using dispatch_async:
[self.tableView reloadData];
dispatch_async(dispatch_get_main_queue(), ^{
NSIndexPath* indexPath = [NSIndexPath indexPathForRow: ([self.tableView numberOfRowsInSection:([self.tableView numberOfSections]-1)]-1) ...
What does “for” attribute do in HTML tag?
... is focusing on first element. <html> <body> <div id="first_div"> <label for="name">Name</label> <input type="text" id="name"> </div> <div id="second_div"> <label for="name">Name</label> <input type="text" id="name"> </div>...
pandas: multiple conditions while indexing data frame - unexpected behavior
...
You can use query(), i.e.:
df_filtered = df.query('a == 4 & b != 2')
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How can I view the shared preferences file using Android Studio?
...File Explorer, and browse "/data/data/< name of your package >/shared_prefs/". You will find the XML there... and also you can copy it for inspection.
If you have a non-rooted device it's not possible to do that directly from Android Studio. However, you can access the file with adb shell as ...
GLib compile error (ffi.h), but libffi is installed
...sr/local/src/utils/libffi-3.0.9.tar.gz
cd libffi-3.0.9
/bin/perl -pe 's#^AM_CFLAGS = .*#AM_CFLAGS = -g#' -i Makefile.in
/bin/perl -pe 's#^includesdir = .*#includesdir = \@includedir\@#' -i include/Makefile.in
./configure --prefix=/usr/local \
--includedir=/usr/local/include
gmake
gmake install
...
How to initialize an array's length in JavaScript?
...(4).forEach(() => …)
OR
( typescript safe )
Array(6).fill(null).map((_, i) => i);
// [0, 1, 2, 3, 4, 5]
OR
Classic method using a function ( works in any browser )
function NewArray(size) {
var x = [];
for (var i = 0; i < size; ++i) {
x[i] = i;
}
return x;
}
va...
Where is the C auto keyword used?
...
The page linked is outdated. Since C11, there's also _Thread_local details: en.cppreference.com/w/c/language/storage_duration and stackoverflow.com/a/14289720/6557621
– MCCCS
Jun 7 '18 at 16:02
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ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
...sql/support-files/mysql.server stop
Start it in safe mode:
$ sudo mysqld_safe --skip-grant-tables --skip-networking
(above line is the whole command)
This will be an ongoing command until the process is finished so open another shell/terminal window, log in without a password:
$ mysql -u root...