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When do I need to use a semicolon vs a slash in Oracle SQL?
...e 1:
ORA-00942: table or view does not exist
The / is mainly required in order to run statements that have embedded ; like a CREATE PROCEDURE statement.
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Why should I use version control? [closed]
...ou probably know by now), you can use any distributed VCS (git, mercurial, etc) locally, without a server. You could also use a centralised VCS (CVS, SVN, etc.) locally, but it'd be much more annoying to set up, and wouldn't provide much benefit. Regardless of the VCS you use, you can have it on a s...
Use of class definitions inside a method in Java
...functions (event handlers in GUIs, like onClick() when a Button is clicked etc.), it's quite usual to use "anonymous classes" - first of all because you can end up with a lot of them. But sometimes anonymous classes aren't good enough - especially, you can't define a constructor on them. In these ca...
Python - When to use file vs open
...classes in the io library (somewhat similar to Java with buffered readers, etc.)
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Does JavaScript have “Short-circuit” evaluation?
...'s not exactly how the code is evaluated and we'll need to delve deeper in order to fully understand.
How exactly is the && and || interpreted?:
It's time to look "under the hood of the javascript engine". Let's consider this practical example:
function sanitise(x) {
if (isNaN(x)...
SPA best practices for authentication and session management
...ilding SPA style applications using frameworks like Angular, Ember, React, etc. what do people believe to be some best practices for authentication and session management? I can think of a couple of ways of considering approaching the problem.
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Cartesian product of x and y array points into single array of 2D points
... to bugs if you expect the cartesian product to be constructed in the same order for arrays of the same size.
– tlnagy
Jul 27 '15 at 18:35
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Force browser to clear cache
...se 1.0
script_1.1.css // This is the URL for release 1.1
script_1.2.css // etc.
Or alternatively do it after the file name:
script.css?v=1.0 // This is the URL for release 1.0
script.css?v=1.1 // This is the URL for release 1.1
script.css?v=1.2 // etc.
You can check out this link to see how it ...
What's the difference between and , and ?
...relevance (for mark). b is for key words, product names, actionable words, etc., while i is for technical terms, thoughts, phrases, etc. Honestly IMO, there needs to be a greater distinction between the two.
– chharvey
Jan 21 '12 at 4:51
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How to convert JSON to XML or XML to JSON?
... XML child-element. You would consume these two differently in JavaScript, etc. Different examples of XML conforming to the same schema can produce actually different JSON structures this way. You can add the attribute json:Array='true' to your element to workaround this in some (but not necessarily...