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How to undo the effect of “set -e” which makes bash exit immediately if any command fails?
...that you enable shell options with set - and disable them with set +. Historical raisins, donchanow.
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Showing commits made directly to a branch, ignoring merges in Git
When using git, is there a way to show commits made to a branch, while ignoring all commits that were brought in by merging?
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Why is there no std::stou?
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The most pat answer would be that the C library has no corresponding “strtou”, and the C++11 string functions are all just thinly veiled wrappers around the C library functions: The std::sto* functions mirror strto*, and the std::to_string functions use sprintf.
Edit: As Ke...
is there an virtual environment for node.js?
...iki modules page, but I can't find anything similar to virtualenv (python) or rvm.
7 Answers
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Why is it wrong to use std::auto_ptr with standard containers?
...t an STL element must be "copy-constructible" and "assignable." In other words, an element must be able to be assigned or copied and the two elements are logically independent. std::auto_ptr does not fulfill this requirement.
Take for example this code:
class X
{
};
std::vector<std::auto_ptr&...
Looping through localStorage in HTML5 and JavaScript
So, I was thinking I could just loop through localStorage like a normal object as it has a length. How can I loop through this?
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How to retrieve a single file from a specific revision in Git?
I have a Git repository and I'd like to see how some files looked a few months ago. I found the revision at that date; it's 27cf8e84bb88e24ae4b4b3df2b77aab91a3735d8 . I need to see what one file looks like, and also save it as a ("new") file.
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How to parse a JSON string to an array using Jackson
...I finally got it:
ObjectMapper objectMapper = new ObjectMapper();
TypeFactory typeFactory = objectMapper.getTypeFactory();
List<SomeClass> someClassList = objectMapper.readValue(jsonString, typeFactory.constructCollectionType(List.class, SomeClass.class));
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Reload Flask app when template file changes
...running Flask application using the built-in server ( Flask.run ), it monitors its Python files and automatically reloads the app if its code changes:
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Instantiating object of type parameter
...bout T is that it is some subclass of Object. You need to specify some factory to create instances of T.
One approach could use a Supplier<T>:
class MyClass<T> {
private final Supplier<? extends T> ctor;
private T field;
MyClass(Supplier<? extends T> ctor) {
th...