How to escape liquid template tags?
it is possible to disable liquid processing engine using the raw tag: {% raw %} {% this %} {% endraw %} will display {% this %}
templates
How to set dynamic values with Kubernetes yaml file
You can also use envsubst when deploying. e.g. cat app/deployment.yaml | envsubst | kubectl apply … It will replace all variables in the file with their values. We are successfully using this approach on our CI when deploying to multiple environments, also to inject the CI_TAG etc into the deployments.
Confusing Template error
ISO C++03 14.2/4: When the name of a member template specialization appears after . or -> in a postfix-expression, or after nested-name-specifier in a qualified-id, and the postfix-expression or qualified-id explicitly depends on a template-parameter (14.6.2), the member template name must be prefixed by the keyword template. Otherwise the name is assumed to name a … Read more
How do I use Django templates without the rest of Django?
The solution is simple. It’s actually well documented, but not too easy to find. (I had to dig around — it didn’t come up when I tried a few different Google searches.) The following code works: >>> from django.template import Template, Context >>> from django.conf import settings >>> settings.configure() >>> t = Template(‘My name is … Read more
What does it mean to “ODR-use” something?
It’s just an arbitrary definition, used by the standard to specify when you must provide a definition for an entity (as opposed to just a declaration). The standard doesn’t say just “used”, because this can be interpreted diversely depending on context. And some ODR-use doesn’t really correspond to what one would normally associate with “use”; … Read more
What are template deduction guides and when should we use them?
Template deduction guides are patterns associated with a template class that tell the compiler how to translate a set of constructor arguments (and their types) into template parameters for the class. The simplest example is that of std::vector and its constructor that takes an iterator pair. template<typename Iterator> void func(Iterator first, Iterator last) { vector … Read more
C++ function template partial specialization?
Function partial specialization is not allowed yet as per the standard. In the example, you are actually overloading & not specializing the max<T1,T2> function. Its syntax should have looked somewhat like below, had it been allowed: // Partial specialization is not allowed by the spec, though! template <typename T> inline T const& max<T,T> (T const& … Read more
How to set std::tuple element by index?
std::get returns a reference to the value. So you set the value like this: std::get<0>(myTuple) = newValue; This of course assumes that myTuple is non-const. You can even move items out of a tuple via std::move, by invoking it on the tuple: auto movedTo = std::get<0>(std::move(myTuple));
What’s the advantage of Logic-less template (such as mustache)?
In other words, it prevents you from shooting yourself in the foot. In the old JSP days, it was very common to have JSP files sprinkled with Java code, which made refactoring much harder, since you had your code scattered. If you prevent logic in templates by design (like mustache does), you will be obliged … Read more
Splitting templated C++ classes into .hpp/.cpp files–is it possible?
It is not possible to write the implementation of a template class in a separate cpp file and compile. All the ways to do so, if anyone claims, are workarounds to mimic the usage of separate cpp file but practically if you intend to write a template class library and distribute it with header and … Read more