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Why do we need message brokers like RabbitMQ over a database like PostgreSQL?

...res? If it doesn't, then this doesn't help. – duality_ Sep 3 at 9:27 @duality_ If it doesn't, write a patch :) ...
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How to generate an entity-relationship (ER) diagram using Oracle SQL Developer

.... Click on the «Browser» tab, expand the design (probably called Untitled_1), right-click «Relational Models» and select «New Relational Model». Right click on the newly created relational model (probably Relational_1) and select «Show». Then just drag the tables you want (from e.g. the «Co...
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Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

... Following command resolved my issue: sudo chown -R _mysql:mysql /usr/local/var/mysql sudo mysql.server start share | improve this answer | follow ...
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Android ImageView Zoom-in and Zoom-Out

...wn(int keyCode, KeyEvent event) { if(keyCode==KeyEvent.KEYCODE_DPAD_UP){ // zoom in zoomControler+=10; } if(keyCode==KeyEvent.KEYCODE_DPAD_DOWN){ // zoom out zoomControler-=10; ...
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How to properly import a selfsigned certificate into Java keystore that is available to all Java app

...se: System.out.println(System.getProperty("java.home")); Copy the file JAVA_HOME\lib\security\cacerts to another folder. In Portecle click File > Open Keystore File Select the cacerts file Enter this password: changeit Click Tools > Import Trusted Certificate Browse for the file mycertificate....
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Difference between single and double quotes in Bash

...one who doesn't know what "interpolate" means: en.wikipedia.org/wiki/String_interpolation – Kolob Canyon May 10 '18 at 17:57 1 ...
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Traits vs. interfaces

...sing APC: class ApcCacher { public function fetch($key) { return apc_fetch($key); } public function store($key, $data) { return apc_store($key, $data); } public function delete($key) { return apc_delete($key); } } Then, in your HTTP response object, you check for a cache h...
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Getting a structural type with an anonymous class's methods from a macro

...ral type with the named member. */ def bar(name: String): Any = macro bar_impl def bar_impl(c: Context)(name: c.Expr[String]) = { import c.universe._ val anon = TypeName(c.freshName) // next week, val q"${s: String}" = name.tree val Literal(Constant(s: String)) = name.tree v...
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Numpy: Get random set of rows from 2D array

...st, but this is what works best for me: A[np.random.choice(A.shape[0], num_rows_2_sample, replace=False)] change the replace=False to True to get the same thing, but with replacement. share | im...
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Set focus on TextBox in WPF from view model

... force it to false and then true. public bool IsFocused { get { return _isFocused; } set { if (_isFocused == value) { _isFocused = false; OnPropertyChanged(); } _isFocused = value; OnPropertyChanged(); } } ...