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Oracle find a constraint
...
select * from all_constraints
where owner = '<NAME>'
and constraint_name = 'SYS_C00381400'
/
Like all data dictionary views, this a USER_CONSTRAINTS view if you just want to check your current schema and a DBA_CONSTRAINTS view for administration users.
The const...
Format file size as MB, GB, etc [duplicate]
...
public static String readableFileSize(long size) {
if(size <= 0) return "0";
final String[] units = new String[] { "B", "kB", "MB", "GB", "TB" };
int digitGroups = (int) (Math.log10(size)/Math.log10(1024));
return new DecimalFormat("#,##0.#").format(size/Math.pow(1024, ...
How can I put the current running linux process in background? [closed]
...he process only the shell that it is running from. You could do a kill -9 <pid of your shell and then the process will still run and output will be thrown away - but you will have to login again to start a new shell.
– Ed Heal
Dec 3 '12 at 5:01
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Applying .gitignore to committed files
...ached
(The -r flag in xargs prevents git rm from running on an empty result and printing out its usage message, but may only be supported by GNU findutils. Other versions of xargs may or may not have a similar option.)
Now you can just type git apply-gitignore in your repo, and it'll do the work...
Is returning by rvalue reference more efficient?
...return value of the function. If the compiler can, it will avoid the move altogether, by using RVO (return value optimization). Now, you can do the following
Beta_ab ab = others.toAB();
And it will move construct the temporary into ab, or do RVO to omit doing a move or copy altogether. I recommen...
How to run multiple shells on Emacs
...ow that I can run shell from emacs using M-x shell. I would like to have multiple shell windows in the same time, but typing M-x shell a second time just opens me the same shell window.
...
What is a sealed trait?
...y in the same file as its declaration.
They are often used to provide an alternative to enums. Since they can be only extended in a single file, the compiler knows every possible subtypes and can reason about it.
For instance with the declaration:
sealed trait Answer
case object Yes extends Answe...
Using `textField:shouldChangeCharactersInRange:`, how do I get the text including the current typed
... return true
}
As an extension:
extension UITextField {
func fullTextWith(range: NSRange, replacementString: String) -> String? {
if let fullSearchString = self.text, let swtRange = Range(range, in: fullSearchString) {
return fullSearchString.replacingCharacters(i...
How to get a complete list of object's methods and attributes?
...ttributes are actually defined as the arguments accepted by the getattr built-in function. As the user can reimplement __getattr__, suddenly allowing any kind of attribute, there is no possible generic way to generate that list. The dir function returns the keys in the __dict__ attribute, i.e. all t...
Error: CUICatalog: Invalid asset name supplied: (null), or invalid scale factor : 2.000000
...the name you supply is a nil value, then using stringWithFormat: would result in it looking for an image that is literally named "(null)", as if you were calling [UIImage imageNamed:@"(null)"].
Something like this is probably a better option:
if (name) {
UIImage *image = [UIImage imageNamed:na...