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Does MySQL ignore null values on unique constraints?
...S NOT NULL seems to fail me as it not supported in my version of MySQL. Anyone know where I could look?
– newdark-it
Nov 20 '18 at 17:13
1
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T-SQL split string
...I need to split by a comma. I have seen many answers on StackOverflow but none of them works in R2. I have made sure I have select permissions on any split function examples. Any help greatly appreciated.
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Round to at most 2 decimal places (only if necessary)
...BlS1cqbvWPCHJeOy?p=preview
NOTE: This is not a universal solution for everyone. There are several different rounding algorithms, your implementation can be different, depends on your requirements. https://en.wikipedia.org/wiki/Rounding
Solution 2 is to avoid front end calculations and pull rounded v...
Why should I use Hamcrest-Matcher and assertThat() instead of traditional assertXXX()-Methods
...Value"));
vs.
assertThat(foo, hasItems("someValue", "anotherValue"));
One can discuss which one of those is easier to read, but once the assert fails, you'll get a good error message from assertThat, but only a very minimal amount of information from assertTrue.
assertThat will tell you what t...
jQuery: how to get which button was clicked upon form submission?
... up for form submission. I also have multiple forms on the page, but just one here for this example. I'd like to know which submit button was clicked without applying a .click() event to each one.
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“Public key certificate and private key doesn't match” when using Godaddy issued certificate [closed
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@felby Should mark this one as the accepted answer. This is the only answer that does not create an SSL trust issue with iOS devices.
– Noel Baron
Jul 11 '15 at 11:26
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How do I change the UUID of a virtual disk?
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The correct command is the following one.
VBoxManage internalcommands sethduuid "/home/user/VirtualBox VMs/drupal/drupal.vhd"
The path for the virtual disk contains a space, so it must be enclosed in double quotes to avoid it is parsed as two parameters.
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Inline functions in C#?
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Finally in .NET 4.5, the CLR allows one to hint/suggest1 method inlining using MethodImplOptions.AggressiveInlining value. It is also available in the Mono's trunk (committed today).
// The full attribute usage is in mscorlib.dll,
// so should not need to incl...
Loop through an array in JavaScript
... flow control statements
Cons
Too verbose
Imperative
Easy to have off-by-one errors (sometimes also called a fence post error)
2. Array.prototype.forEach
The ES5 specification introduced a lot of beneficial array methods, one of them, the Array.prototype.forEach and it gives us a concise way to i...
jQuery Validate Plugin - How to create a simple custom rule?
... remote as others have suggested but as far as I can tell that only allows one validation, so it wouldn't work if you need to to two async validations or have several error messages depending on the response.
– Adam Bergmark
Mar 19 '13 at 17:57
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