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Type Checking: typeof, GetType, or is?
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All are different.
typeof takes a type name (which you specify at compile time).
GetType gets the runtime type of an instance.
is returns true if an instance is in the inheritance tree.
Example
class Animal { }
class Dog : Animal { }
void PrintTypes(Animal a) {...
Javascript calculate the day of the year (1 - 366)
... fail when now is a date in between march 26th and October 29th andnow's time is before 1AM (eg 00:59:59). This is due to the code not taking daylight savings time into account. You should compensate for this:
var now = new Date();
var start = new Date(now.getFullYear(), 0, 0);
var diff = (n...
Android: textColor of disabled button in selector not showing?
...ferent states.
Do the following:
Create another XML file in res\color named something like text_color.xml.
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<!-- disabled state -->
<item android:state_enabled="fa...
When to use SELECT … FOR UPDATE?
Please help me understand the use-case behind SELECT ... FOR UPDATE .
2 Answers
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Refreshing OAuth token using Retrofit without modifying all calls
...ceptor to include the access token with each call.
However there will be times, when the access token will expire, and the token needs to be refreshed. When the token expires, the next call will return with an Unauthorized HTTP code, so that's easy to monitor.
We could modify each Retrofit call the ...
How do I reference an existing branch from an issue in GitHub?
Let's say I have a branch named feature/1 . And also issue #1. I want to link that branch to that issue.
5 Answers
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Header files for x86 SIMD intrinsics
...X, SSE, AVX, ...)? It seems impossible to find such a list online. Correct me if I'm wrong.
5 Answers
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Add shadow to custom shape on Android
... a drop shadow to a custom shape in Android? After looking through the documentation, I only see a way to apply a text shadow.
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throw new std::exception vs throw std::exception
while looking at some code I stumbled onto:
5 Answers
5
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CASCADE DELETE just once
... can perform a delete and tell Postgresql to cascade it just this once? Something equivalent to
9 Answers
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