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How to get primary key column in Oracle?
...nstraints cons, all_cons_columns cols
WHERE cols.table_name = 'TABLE_NAME'
AND cons.constraint_type = 'P'
AND cons.constraint_name = cols.constraint_name
AND cons.owner = cols.owner
ORDER BY cols.table_name, cols.position;
Make sure that 'TABLE_NAME' is in upper case since Oracle stores table name...
Creating and playing a sound in swift
... Did you try to compile the code? I am getting error "Cannot convert the extression's type 'Unmanaged <CFURL>!' to type 'CFString'" from this line "let soundURL = CFBundleCopyResourceURL(CFBundleGetMainBundle(), "Cha-Ching", "aiff", nil)"
– bpolat
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Validating URL in Java
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Using only standard API, pass the string to a URL object then convert it to a URI object. This will accurately determine the validity of the URL according to the RFC2396 standard.
Example:
public boolean isValidURL(String url) {
try {
new URL(url).toURI();
} catch (Ma...
The JPA hashCode() / equals() dilemma
There have been some discussions here about JPA entities and which hashCode() / equals() implementation should be used for JPA entity classes. Most (if not all) of them depend on Hibernate, but I'd like to discuss them JPA-implementation-neutrally (I am using EclipseLink, by the way).
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MemoryCache does not obey memory limits in configuration
I’m working with the .NET 4.0 MemoryCache class in an application and trying to limit the maximum cache size, but in my tests it does not appear that the cache is actually obeying the limits.
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Pass a PHP string to a JavaScript variable (and escape newlines) [duplicate]
...SCII, of course)
Since UTF-8 supports full Unicode, it should be safe to convert on the fly.
Note that because json_encode escapes forward slashes, even a string that contains </script> will be escaped safely for printing with a script block.
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How to concatenate properties from multiple JavaScript objects
...t not all of them.
So, it is recommend to use a transpiler like Babel to convert ECMAScript 2015+ code into a backwards compatible version of JavaScript in current and older browsers or environments.
This is the equivalent code Babel will generate for you:
"use strict";
var _extends = Object.a...
How much size “Null” value takes in SQL Server
...
However, a second bit, and a third bit, and all the way up to an eighth bit fit in the same byte.
– Matti Virkkunen
Sep 16 '10 at 22:29
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Fastest method to replace all instances of a character in a string [duplicate]
...nces of foo with bar in the string str. If you just have a string, you can convert it to a RegExp object like this:
var pattern = "foobar",
re = new RegExp(pattern, "g");
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Recommended method for escaping HTML in Java
Is there a recommended way to escape < , > , " and & characters when outputting HTML in plain Java code? (Other than manually doing the following, that is).
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