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Nginx serves .php files as downloads, instead of executing them
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For php7.2: unix:/var/run/php5-fpm.sock; convert to unix:/var/run/php/php7.2-fpm.sock; (one more nesting /php)
– Oleg Reym
Jul 26 '19 at 10:29
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How to create index on JSON field in Postgres?
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Found:
CREATE TABLE publishers(id INT, info JSON);
CREATE INDEX ON publishers((info->>'name'));
As stated in the comments, the subtle difference here is ->> instead of ->. The former one returns the value as text, the latter as a JSON object...
Why implement interface explicitly?
So, what exactly is a good use case for implementing an interface explicitly?
11 Answers
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What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
...void doSomething(MyClass);
}
MyNamespace::MyClass obj; // global object
int main()
{
doSomething(obj); // Works Fine - MyNamespace::doSomething() is called.
}
In the above example there is neither a using-declaration nor a using-directive but still the compiler correctly identifies the unqu...
Show current state of Jenkins build on GitHub repo
...s appear when going to Advance-> Manage Additional Github Actions -> Convert Login and Password to Github token.
– shehzan
Jan 19 '16 at 16:22
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Good Hash Function for Strings
...it more likely to generate unique hashes) So you could do something like:
int hash = 7;
for (int i = 0; i < strlen; i++) {
hash = hash*31 + charAt(i);
}
share
|
improve this answer
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Understanding FFT output
...tputs because you are using a complex to complex FFT. Remember that you've converted your 32 samples into 64 values (or 32 complex values) by extending it with zero imaginary parts. This results in a symetric FFT output where the frequency result occurs twice. Once ready to use in the outputs 0 to N...
Standardize data columns in R
...the output of scale is Nx1 matrix so ideally we should add an as.vector to convert the matrix type back into a vector type. Thanks Julian!
EDIT 2 (2019): Quoting Duccio A.'s comment: For the latest dplyr (version 0.8) you need to change dplyr::funcs with list, like dat %>% mutate_each_(list(~sca...
Java: Static vs inner class [duplicate]
...stance.
See this example
class A
{
class B
{
// static int x; not allowed here
}
static class C
{
static int x; // allowed here
}
}
class Test
{
public static void main(String… str)
{
A a = new A();
// Non-Static Inner Class
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How to launch an Activity from another Application in Android
...ed package from my Android application. I assume that it is possible using intents, but I didn't find a way of doing it. Is there a link, where to find the information?
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