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Create an index on a huge MySQL production table without table locking

...d or dropped. The CREATE INDEX or DROP INDEX statement only finishes after all transactions that are accessing the table are completed, so that the initial state of the index reflects the most recent contents of the table. Previously, modifying the table while an index is being created or dropped ty...
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How to deselect a selected UITableView cell?

...ndexPath:indexPath animated:YES]; } Swift 3.0: override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { //Change the selected background view of the cell. tableView.deselectRow(at: indexPath, animated: true) } ...
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Accessing UI (Main) Thread safely in WPF

... example: class MyViewModel { private readonly SynchronizationContext _syncContext; public MyViewModel() { // we assume this ctor is called from the UI thread! _syncContext = SynchronizationContext.Current; } // ... private void watcher_Changed(object send...
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Viewing full output of PS command

...13681 0.0 0.0 1420 852 pts/1 S 14:39:32 0:00 grep ps ps aux lists all processes executed by all users. See man ps for details. The ww flag sets unlimited width. -w Wide output. Use this option twice for unlimited width. w Wide output. Use this option twice for unlimited ...
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How do I use arrays in C++?

C++ inherited arrays from C where they are used virtually everywhere. C++ provides abstractions that are easier to use and less error-prone ( std::vector<T> since C++98 and std::array<T, n> since C++11 ), so the need for arrays does not arise quite as often as it does in C. However, ...
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How can I determine installed SQL Server instances and their versions?

...'m trying to determine what instances of sql server/sql express I have installed (either manually or programmatically) but all of the examples are telling me to run a SQL query to determine this which assumes I'm already connected to a particular instance. ...
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How to pass parameters to a view

....options: initialize: function(options) { this.options = options; _.bindAll(this, 'render'); }, or use some finer ways as described by @Brave Dave. share | improve this answer | ...
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How do I change the IntelliJ IDEA default JDK?

...I want IntelliJ IDEA to reflect changes of JAVA_HOME sys variable automatically. – Ivan_Bereziuk Nov 16 '17 at 10:48 1 ...
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In PHP, how to detect the execution is from CLI mode or through browser ? [duplicate]

... Use the php_sapi_name() function. if (php_sapi_name() == "cli") { // In cli-mode } else { // Not in cli-mode } Here are some relevant notes from the docs: php_sapi_name — Returns the type of interface between web server...
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Eclipse: have the same file open in two editors?

...r file and then Window->New Editor (Note: in newer versions it will be called New Window) Then, click on its tab and drag it somewhere else to have two editors of the same file Update: as mentioned by moschlar, From version 4.4, two editors can be created with Window -> Editor -> Clone. ...