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What's the difference between a catalog and a schema in a relational database?

...per host computer (or virtual OS). Multiple clusters is commonly done, for testing and deploying new versions of Postgres (ex: 9.0, 9.1, 9.2, 9.3, 9.4, 9.5). If you did have multiple clusters, imagine the diagram above duplicated. Different port numbers allow the multiple clusters to live side-by...
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String.Replace ignoring case

... don't have to escape the replacement string. Here is a small fiddle that tests the code: using System; using System.Text.RegularExpressions; public class Program { public static void Main() { var tests = new[] { new { Input="abcdef", Search="abc", Replacem...
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Turn a simple socket into an SSL socket

...() { SSL_load_error_strings(); SSL_library_init(); OpenSSL_add_all_algorithms(); } void DestroySSL() { ERR_free_strings(); EVP_cleanup(); } void ShutdownSSL() { SSL_shutdown(cSSL); SSL_free(cSSL); } Now for the bulk of the functionality. You may want to add a while lo...
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Dictionaries and default values

...collections import defaultdict a = defaultdict(lambda: "default", key="some_value") a["blabla"] => "default" a["key"] => "some_value" You can pass any ordinary function instead of lambda: from collections import defaultdict def a(): return 4 b = defaultdict(a, key="some_value") b['absent...
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Changing the cursor in WPF sometimes works, sometimes doesn't

...deCursor: Mouse.OverrideCursor = Cursors.Wait; try { // do stuff } finally { Mouse.OverrideCursor = null; } This overrides the cursor for your application rather than just for a part of its UI, so the problem you're describing goes away. ...
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What are the differences between BDD frameworks for Java? [closed]

...a report from the code. spock bad: maybe a bit extreme, this is a complete testing framework, not only BDD, good: very active, very cool. jbehave, the "mother" of all BDD in Java, bad: very powerful = complex, incompatible license (for me), comes with almost every test library and much more, good: b...
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Why does jQuery or a DOM method such as getElementById not find the element?

... <script> console.log("script #1: %o", document.getElementById("test")); // null </script> <div id="test">test div</div> <script> console.log("script #2: %o", document.getElementById("test")); // <div id="test" ... </script> So, what should y...
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Parse JSON in C#

...lizeObject(object o); This are already part of Json.NET so you can just call them on the JsonConvert class. Link: Serializing and Deserializing JSON with Json.NET Now, the reason you're getting a StackOverflow is because of your Properties. Take for example this one : [DataMember] public st...
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Storing SHA1 hash values in MySQL

...INARY(20) and CHAR(40). CREATE TABLE `binary` ( `id` int unsigned auto_increment primary key, `password` binary(20) not null ); CREATE TABLE `char` ( `id` int unsigned auto_increment primary key, `password` char(40) not null ); With million of records binary(20) takes 44.56M, whil...
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How to select option in drop down protractorjs e2e tests

I am trying to select an option from a drop down for the angular e2e tests using protractor. 31 Answers ...