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Difference between volatile and synchronized in Java
...om obtaining the monitor (or lock) for the same object, thereby preventing all code blocks protected by synchronization on the same object from executing concurrently. Synchronization also creates a "happens-before" memory barrier, causing a memory visibility constraint such that anything done up t...
select * vs select column
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It always pulls a tuple (except in cases where the table has been vertically segmented - broken up into columns pieces), so, to answer the question you asked, it doesn't matter from a performance perspective. However, for many other reasons, (below) you should always select specifically those co...
SQL: How to properly check if a record exists
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I would prefer not use Count function at all:
IF [NOT] EXISTS ( SELECT 1 FROM MyTable WHERE ... )
<do smth>
For example if you want to check if user exists before inserting it into the database the query can look like this:
IF NOT EXISTS ( SELECT 1 ...
How do I replace all line breaks in a string with elements?
How can I read the line break from a value with JavaScript and replace all the line breaks with <br /> elements?
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How to enable local network users to access my WAMP sites?
First of all, I read at least 20 articles about this topic, and not one of them can match up the scenario and I screwed up the process numerous times. So I turn help by offering my specific scenario if any help will be appreciated.
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How to find all occurrences of an element in a list?
...first occurrence of an item in a list. Is there a neat trick which returns all indices in a list for an element?
16 Answers...
How to remove all the null elements inside a generic list in one go?
Is there a default method defined in .Net for C# to remove all the elements within a list which are null ?
7 Answers
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In plain English, what does “git reset” do?
...master)
You've ended up in a detached HEAD state. HEAD, work tree, index all match B, but the master branch was left behind at C. If you make a new commit D at this point, you'll get this, which is probably not what you want:
- A - B - C (master)
\
D (HEAD)
Remember, reset doesn'...
Get all table names of a particular database by SQL query?
... Server and MySQL 2) INFORMATION_SCHEMA.TABLES exists only in MySQL 3) I really wonder how comes you got so many upvotes for this ...
– Apostolos
Dec 14 '18 at 11:04
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How do I import a namespace in Razor View Page?
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Finally found the answer.
@using MyNamespace
For VB.Net:
@Imports Mynamespace
Take a look at @ravy amiry's answer if you want to include a namespace across the app.
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