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ORA-00054: resource busy and acquire with NOWAIT specified or timeout expired
...fix the problem.
LOCK TABLE 'TABLE NAME'; -- you will 'wait' (developers call this hanging). until the session with the open transaction, commits. This is a queue. so there may be several sessions ahead of you. but you will NOT error out.
Execute DDL. Your DDL will then run a lock with the NO WAI...
Getting the ID of the element that fired an event
...that fired the function.
'this' is a DOM element when you are inside of a callback function (in the context of jQuery), for example, being called by the click, each, bind, etc. methods.
Here is where you can learn more: http://remysharp.com/2007/04/12/jquerys-this-demystified/
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How to create GUID / UUID?
...n (4 = "random"). The "y" marks where the uuid variant (field layout, basically) needs to be embedded. See sections 4.1.1 and 4.1.3 of ietf.org/rfc/rfc4122.txt for more info.
– broofa
Nov 27 '12 at 22:13
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What is the opposite of evt.preventDefault();
...rovided by another comments and answers:
How to unbind a listener that is calling event.preventDefault() (using jQuery)?
How to reenable event.preventDefault?
Note that the second one has been accepted with an example solution, given by redsquare (posted here for a direct solution in case this is...
How do you log all events fired by an element in jQuery?
... You can monitor all events with this hook (in windows programming this is called a hook). This hook does not affects the operation of your software/program.
In the console log you can see something like this:
Explanation of what you see:
In the console log you will see all events you select (...
What is REST? Slightly confused [closed]
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REST is a software design pattern typically used for web applications. In layman's terms this means that it is a commonly used idea used in many different projects. It stands for REpresentational State Transfer. The basic idea of REST is treating objects on the s...
JavaScript validation for empty input field
I have this input field
<input name="question"/> I want to call IsEmpty function when submit clicking submit button.
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Get root view from current activity
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You can just call findViewById(R.id.imageView1); on the activity if you want the specific view.
– RobCo
Apr 21 '17 at 15:55
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Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
...(or redraw) the WHOLE canvas for a new layout (= try at the game) ?
Just call Canvas.drawColor(Color.BLACK), or whatever color you want to clear your Canvas with.
And: how can I update just a part of the screen ?
There is no such method that just update a "part of the screen" since Android O...
How do I delete rows in a data frame?
...ent of a set is given by the '-' operator.
So, assuming the data.frame is called myData:
myData[-c(2, 4, 6), ] # notice the -
Of course, don't forget to "reassign" myData if you wanted to drop those rows entirely---otherwise, R just prints the results.
myData <- myData[-c(2, 4, 6), ]
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