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Pure JavaScript: a function like jQuery's isNumeric() [duplicate]
...rseInt can result in unwanted false positives like "123abc", "2e1", "0x2", etc.. (even jQuery.isNumeric will parse true). I would use something like this function isNumeric(str) { return /^\d*\.{0,1}\d*$/.test(str); }
– ebob
May 1 '17 at 19:19
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ERROR 1396 (HY000): Operation CREATE USER failed for 'jack'@'localhost'
...ving privileges and DROP USER for deleting them:
REVOKE priv1,priv2,priv3,etc... FROM 'jack@localhost'; // remove certain privileges
DROP USER 'jack@localhost'; // completely delete the account
Best to use the tools provided rather than mucking around in the background.
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delete vs delete[] operators in C++
... elements allocated - it may use this for any purpose it wants (debugging, etc...).
For the new that creates a non-array object, it will look for an operator new in the element's class or in the global scope. It passes the amount of memory requested (exactly sizeof(T) always).
For the delete[], ...
How to get multiple select box values using jQuery?
... $(el).text();
return $(el).data("mydata");
return $(el).prop("disabled");
etc...
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iPhone app signing: A valid signing identity matching this profile could not be found in your keycha
...did not import my Ad Hoc Distribution profile, which is the one I need. In order to get that, I had to go to the portal, fix the profile expiry, d
Copy array items into another array
...han creating a new array.
However, it seems that for large arrays (of the order of 100,000 members or more), this trick can fail. For such arrays, using a loop is a better approach. See https://stackoverflow.com/a/17368101/96100 for details.
var newArray = [];
newArray.push.apply(newArray, dataArr...
Loop through files in a folder using VBA?
...can change its argument to return different type of files (hidden, system, etc.) - see MS documentation : docs.microsoft.com/en-us/office/vba/language/reference/…
– Vincent
Apr 14 at 12:47
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Convert a list to a string in C#
...st). The first parameter is the delimiter. So you could also comma-delimit etc.
You might also want to look at using StringBuilder to do running concatenations, rather than forming a list.
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Why does JPA have a @Transient annotation?
...ystem uses tools to generate entities from database. (Hibernate has those, etc...)
Now, suppose that by your business logic you need a particular field NOT to be persisted. You have to "configure" your entity in a particular way.
While Transient keyword works on an object - as it behaves within a j...
Command to get nth line of STDOUT
...& NR<=64) print}' (can add more conditions easier, multiple ranges, etc...)
– user10607
Jul 3 '15 at 11:51
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