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MySQL Error 1215: Cannot add foreign key constraint
... Thanks. This turned out to be the issue. Staff.Emp_ID was a SMALLINT, while the referencing column was an INT. Sometimes it's the little things...
– Robert B
Jun 10 '13 at 14:08
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What is the difference between print and puts?
... There is another thing ... extend the array class and override the to_s method. puts doesn't use the new to_s for an object of your new class while print does
– kapv89
Oct 28 '12 at 18:30
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What is JSON and why would I use it?
...the official documentation, but I still haven't got to the point where I really understand what JSON is, and why I'd use it.
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Find difference between timestamps in seconds in PostgreSQL
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Try:
SELECT EXTRACT(EPOCH FROM (timestamp_B - timestamp_A))
FROM TableA
Details here: EXTRACT.
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How to analyze a java thread dump?
I am trying to understand more about java, especially about memory management and threads.
For this reason I have recently found interest in looking at thread dumps.
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Understanding the Use of ColorMatrix and ColorMatrixColorFilter to Modify a Drawable's Hue
...working on a UI for an app, and I'm attempting to use grayscale icons, and allow the user to change the theme to a color of their choosing. To do this, I'm trying to just apply a ColorFilter of some sort to overlay a color on top of the drawable. I've tried using PorterDuff.Mode.MULTIPLY, and it wor...
How to get the instance id from within an ec2 instance?
...:\\1:'`"
You may also use curl instead of wget, depending on what is installed on your platform.
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Obtain Bundle Identifier programmatically
...n approach to get the value. ARC example is following:
NSString *value = (__bridge_transfer NSString *)CFDictionaryGetValue(CFBundleGetInfoDictionary(CFBundleGetMainBundle()),
(const void *)(@"CFBundleIdentifier"));
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How to get jQuery dropdown value onchange event
...nswered Nov 12 '13 at 7:00
power_scriptorpower_scriptor
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Generating Random Passwords
...Lost Password page we need to give him a new temporary password. I don't really mind how random this is, or if it matches all the "needed" strong password rules, all I want to do is give them a password that they can change later.
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