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Filtering for empty or NULL names in a queryset
...search for. So, I need a query to give me all the names that have an alias set.
7 Answers
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Is there a null-coalescing (Elvis) operator or safe navigation operator in javascript?
...e 4 ECMAScript proposal. You can use it today with Babel. It allows you to set a default value if the left-hand side of the operator is a nullary value (null/undefined).
const myVariable = a?.b?.c ?? 'Some other value';
// Evaluates to 'Some other value'
const myVariable2 = null ?? 'Some other valu...
android fragment- How to save states of views in a fragment when another fragment is pushed on top o
...ceState and restore it later.
But if you have only one activity and large set of fragments inside it (with intensive usage of replace) and application runs only in one orientation activity's onSaveInstanceState(Bundle outState) may not be called for a long time.
I know three possible workarounds....
Disable orange outline highlight on focus
...rd. Even using type='number' &/or type='tel' . Very frustrating!
BTW, setting tap highlight colour did nothing to resolve this issue for this device and OS config. We are running Safari for android.
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How to convert an image to base64 encoding?
.../path/to/image.jpg");
// alternatively specify an URL, if PHP settings allow
$base64 = base64_encode($imagedata);
bear in mind that this will enlarge the data by 33%, and you'll have problems with files whose size exceed your memory_limit.
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how to use adb command to push a file on device without sd card
... adb or adb.exe. Make sure you are in platform-tools folder if you haven't set path for android.
– Hardik Trivedi
Dec 30 '13 at 8:51
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Get cookie by name
... value will be returned. For example, if there's a cookie named stackToken set for domains .stackexchange.com as well as programmers.stackexchange.com then if you call getCookie("stackToken") neither value will be returned -- parts.length will be greater than 2. If you know all cookie values for the...
How long should SQL email fields be? [duplicate]
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I'm using phpMyAdmin to set up the databases, and I don't see nvarchar anywhere... do I need to set that up manually with an SQL statement, or am I just missing it somewhere?
– Mala
Aug 19 '09 at 1:50
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How to hide only the Close (x) button?
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We can hide close button on form by setting this.ControlBox=false;
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Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
...al y: Slot[Any] = x // Ok, 'cause String is a subtype of Any
y.set(new Rational(1, 2)) // Works, but now x.get() will blow up
If you feel I'm not understanding your question (a distinct possibility), try adding more explanation / context to the problem description and I'll try ...