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When should I use a composite index?
...lf. If you're always querying two dimensions, a composite index is the way to go, doesn't really matter which is first (most probably).
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When does a process get SIGABRT (signal 6)?
...s come from within the process or can this signal be sent from one process to another?
10 Answers
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Why does the Scala compiler disallow overloaded methods with default arguments?
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I'd like to cite Lukas Rytz (from here):
The reason is that we wanted a deterministic naming-scheme for the
generated methods which return default arguments. If you write
def f(a: Int = 1)
the compiler generates
d...
How to insert an element after another element in JavaScript without using a library?
...de, referenceNode.nextSibling);
Where referenceNode is the node you want to put newNode after. If referenceNode is the last child within its parent element, that's fine, because referenceNode.nextSibling will be null and insertBefore handles that case by adding to the end of the list.
So:
functi...
How to set an “Accept:” header on Spring RestTemplate request?
I want to set the value of the Accept: in a request I am making using Spring's RestTemplate .
5 Answers
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OpenSSL: PEM routines:PEM_read_bio:no start line:pem_lib.c:703:Expecting: TRUSTED CERTIFICATE [close
I need a hash-name for file for posting in Stunnel's CApath directory. I have got some certs in this directory and they are working well. Also, I have a server sert and server key:
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Why do we need message brokers like RabbitMQ over a database like PostgreSQL?
I am new to message brokers like RabbitMQ which we can use to create tasks / message queues for a scheduling system like Celery .
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JSON datetime between Python and JavaScript
I want to send a datetime.datetime object in serialized form from Python using JSON and de-serialize in JavaScript using JSON. What is the best way to do this?
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How to check if a map contains a key in Go?
...in this case the empty string) and ok will receive a bool that will be set to true if "foo" was actually present in the map
evaluates ok, which will be true if "foo" was in the map
If "foo" is indeed present in the map, the body of the if statement will be executed and val will be local to that sc...
How do I exit from the text window in Git?
I am using Windows and before committing, Git wants me to enter a text message and a new text window appears.
7 Answers
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