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Update a record without first querying?
Lets say I query the database and load a list of items. Then I open one of the items in a detail view form, and instead of re-querying the item out of the database, I create an instance of the item from the datasource in the list.
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Get a list of distinct values in List
...his will return a sequence (IEnumerable<string>) of Author values -- one per unique value.
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SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
... tables, as use of indexes means it doesn't bother reading all the rows on one of the tables. a full outer join must always read all rows in both tables (or the relevant indexes). In the case where indexes are not enough, or an underlying heap has to be read to output the needed columns then a full ...
Checking whether a variable is an integer or not [duplicate]
...allow any object that behaves like an int, instead of mandating that it be one.
BUT
The classical Python mentality, though, is that it's easier to ask forgiveness than permission. In other words, don't check whether x is an integer; assume that it is and catch the exception results if it isn't:
try:...
Difference between `npm start` & `node app.js`, when starting app?
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From the man page, npm start:
runs a package's "start" script, if one was provided.
If no version is specified, then it starts the "active" version.
Admittedly, that description is completely unhelpful, and that's all it says. At least it's more documented than socket.io.
Anyhow, what ...
Node.js on multi-core machines
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Node.js absolutely does scale on multi-core machines.
Yes, Node.js is one-thread-per-process. This is a very deliberate design decision and eliminates the need to deal with locking semantics. If you don't agree with this, you probably don't yet realize just how insanely hard it is to debug mult...
Easiest way to convert a List to a Set in Java
... there are pitfalls here depending on which implementations of Set and Map one is using; HashSet is assumed here.
– Madbreaks
Jul 3 '18 at 17:25
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How to put spacing between TBODY elements
...processed, therefore content inside them should be well formatted. As mentioned above, copy-paste table or usage of screen reader will just fail. Such design should not be encouraged. ::content solution is better cause it does not mess up the markup.
– pawel-kuznik
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Is it possible to make an HTML anchor tag not clickable/linkable using CSS?
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You can use this css:
.inactiveLink {
pointer-events: none;
cursor: default;
}
And then assign the class to your html code:
<a style="" href="page.html" class="inactiveLink">page link</a>
It makes the link not clickeable and the cursor style an arrow, not a ha...
jQuery find parent form
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peterjwest answer is better than this one.
– gagarine
Feb 17 '14 at 9:16
In HTML5...