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Hidden Features of MySQL
...EY, UNIQUE, or INDEX will be indexed.
NULL means "not having a value". To test for NULL, you cannot use the arithmetic comparison operators such as =, <, or <>. Use the IS NULL and IS NOT NULL operators instead:
NO_AUTO_VALUE_ON_ZERO suppresses auto increment for 0 so that only NULL gene...
PHP - find entry by object property from an array of objects
...You're right about the modification and it is kind of a neat method, but I tested the speed compared to iterating through the object - yourself, because like @phil pointed out, array_filter is doing this too - and this method is taking about five times longer. My test object isn't a big one, so that...
Get the POST request body from HttpServletRequest
...r and clean way :
if ("POST".equalsIgnoreCase(request.getMethod()))
{
test = request.getReader().lines().collect(Collectors.joining(System.lineSeparator()));
}
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Check if inputs are empty using jQuery
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I believe that only tests whether the field started out with a value attribute. It doesn't test the actual form field value like you'd need for validation. jsfiddle.net/T89bS ... the field without a value attribute gets slapped with salmon regar...
How to convert a char array to a string?
...nstructor that takes a NULL-terminated C-string:
char arr[ ] = "This is a test";
string str(arr);
// You can also assign directly to a string.
str = "This is another string";
// or
str = arr;
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Maximum Length of Command Line String
... there is 32768 (I think it should be 32767, but lets believe experimental testing result) characters limitation we need to dig into Windows API.
No matter how you launch program with command line arguments it goes to ShellExecute, CreateProcess or any extended their version. These APIs basically w...
How to import a Python class that is in a directory above?
...can also cause behavioral differences on a developer's machine, be sure to test your code!
There are tools other than pip, however I'd recommend pip be the introductory one :)
I also like to make foo a "package" (a directory containing __init__.py) instead of a module (a single ".py" file), both "pa...
SHA-1 fingerprint of keystore certificate
...as {alias_name}
example:
keytool -list -v -keystore C:\Users\MG\Desktop\test.jks -alias test
On windows, when keytool command is not found, Go to your installed JDK Directory e.g. <YourJDKPath>\Java\jdk1.8.0_231\bin\, open command line and try the above commands for debug/release mode....
jQuery $(“#radioButton”).change(…) not firing during de-selection
...he example works with dots if you change to "input[name='DateSearchOptions.Test']" (name enclosed between single quotes): jsfiddle.net/4hTxn
– Nullpo
Sep 23 '13 at 2:47
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scala vs java, performance and memory? [closed]
...deep algorithmic thoughts), but I can also enter my code in obfuscation contests and potentially earn extra cash for the holidays.
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