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How do I modify fields inside the new PostgreSQL JSON datatype?
...mple key can be done using:
SELECT jsonb '{"a":1}' || jsonb_build_object('<key>', '<value>')
Where <key> should be string, and <value> can be whatever type to_jsonb() accepts.
For setting a value deep in a JSON hierarchy, the jsonb_set() function can be used:
SELECT jsonb_se...
Do you have to put Task.Run in a method to make it async?
...that is, it allows await expressions). async methods may return Task, Task<T>, or (if you must) void.
Any type that follows a certain pattern can be awaitable. The most common awaitable types are Task and Task<T>.
So, if we reformulate your question to "how can I run an operation on a ...
Why are only a few video games written in Java? [closed]
...it's rare for games to be written in 100% C++ anyway - a lot is done using scripting languages, whether they're custom or just integrating an existing languages (Lua being one of the more popular ones these days).
As far as garbage collection is concerned, that can be a bit of a problem. The proble...
What is the maximum possible length of a query string?
...ield in a request.
Microsoft Internet Information Server (Server)
The default limit is 16,384 characters (yes, Microsoft's web server accepts longer URLs than Microsoft's web browser). This is configurable.
Perl HTTP::Daemon (Server)
Up to 8,000 bytes will work. Those constructing web application se...
How to do a JUnit assert on a message in a logger
...n a List in memory. If you're logging a lot you might consider adding a filter to drop boring entries, or to write the log to a temporary file on disk (Hint: LoggingEvent is Serializable, so you should be able to just serialize the event objects, if your log message is.)
import org.apache.log4j.Ap...
could not resolve host github.com error while cloning remote repository in git
... environment variables.
See "Syncing with github":
set HTTPS_PROXY=http://<login_internet>:<password_internet>@aproxy:aport
set HTTP_PROXY=http://<login_internet>:<password_internet>@aproxy:aport
set NO_PROXY=localhost,my.company
(To avoid putting your credentials -- usernam...
Visual Studio popup: “the operation could not be completed”
...red Oct 8 '15 at 7:27
Tom StickelTom Stickel
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HTML5 Email Validation
...
In HTML5 you can do like this:
<form>
<input type="email" placeholder="Enter your email">
<input type="submit" value="Submit">
</form>
And when the user press submit, it automatically shows an error message like:
...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
...phically secure random number generators. See Scott's answer for a secure alternative.
If you do not need it to be absolutely unique over time:
md5(uniqid(rand(), true))
Otherwise (given you have already determined a unique login for your user):
md5(uniqid($your_user_login, true))
...
How to hide underbar in EditText
...olor, underbar should gone.
android:backgroundTint="@color/Transparent"
<color name="Transparent">#00000000</color>
But you can use this in Api v21(Lollipop) or higher
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