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MySQL Creating tables with Foreign Keys giving errno: 150
...h a value in the Parent table PK column(s). Check this with a query like:
SELECT COUNT(*) FROM Child LEFT OUTER JOIN Parent ON Child.FK = Parent.PK
WHERE Parent.PK IS NULL;
This must return zero (0) unmatched values. Obviously, this query is an generic example; you must substitute your table nam...
How to write a scalable Tcp/Ip based server
... to doubt these indicative figures.
IOCP versus thread-per-connection or 'select' primitives
The reason you want to use a mechanism that uses IOCP under the hood is that it uses a very low-level Windows thread pool that does not wake up any threads until there is actual data on the IO channel that...
How do I hide .class files from the Open Resource dialog in Eclipse?
...
Right click on the project and select Properties
Expand Resource and click on Resource Filters
Click on Add Filter... to create a new filter
On the dialog box that opens
Select the Exclude all and Files radio buttons
Under File and Folder Attributes e...
Should I put input elements inside a label element?
...he first example given here by superUntitled for textboxes, textareas, and selects. But for radio buttons and checkboxes, I usually use the third example, where I want the input before the accompanying text and don't want the same kind of fixed width and/or floating that the rest of the labels and f...
jQuery: Get selected element tag name
... be helpful when comparing prop('tagName') result to a tag name. if($("my_selector").prop("tagName").toLowerCase() == 'div') or if($("my_selector").prop("tagName").toUpperCase() == 'DIV')
– S.Thiongane
Jun 4 '14 at 14:39
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Data access object (DAO) in Java
... to persist. The Employee DAO will contain methods to insert/delete/update/select employee(s)
– Rami
Oct 4 '13 at 6:52
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Mongoose subdocuments vs nested schema
...r sorts or edge cases where Mongoose prefers one to the other. And as the selected answer mentions it doesn't appear to make any difference, at least from V3 on.
– cyberwombat
Sep 2 '16 at 21:50
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How to hide soft keyboard on android after clicking outside EditText?
...d to do anything, it just has to exist for the parent view to be focusable/selectable, which is necessary for stealing the focus from the child EditText
– Jacob R
Aug 30 '17 at 21:20
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MySQL INSERT INTO table VALUES.. vs INSERT INTO table SET
...statement insert rows based on explicitly specified values. The INSERT ... SELECT form inserts rows selected from another table or tables.
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What is the correct way to get a subarray in Scala?
...irst n elements with take(n: Int)
array.take(4) // Array('a','b','c','d')
Select any interval of elements with slice(from: Int, until: Int). Note that until is excluded.
array.slice(2,4) // Array('c','d')
The slice method is stricly equivalent to:
array.take(4).drop(2) // Array('c','d')
Exclude t...