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Where does Git store the SHA1 of the commit for a submodule?
...module lives will have an entry for the submodule's commit (this is the so-called "gitlink").
Try doing git ls-tree master <path-to-directory-containing-submodule> (or just git ls-tree master if the submodule lives in the top-level directory).
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Does it make sense to do “try-finally” without “catch”?
...ppropriately. Below is a concrete example of handling the exception from a calling method.
public void yourOtherMethod() {
try {
yourMethod();
} catch (YourException ex) {
// handle exception
}
}
public void yourMethod() throws YourException {
try {
db.s...
How to prevent form from being submitted?
...n't be executed and the form will be submitted either way. You should also call preventDefault to prevent the default form action for Ajax form submissions.
function mySubmitFunction(e) {
e.preventDefault();
someBug();
return false;
}
In this case, even with the bug the form won't submit!
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Rails 4 - Strong Parameters - Nested Objects
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Not sure of Rails 4 but in my Rails 5 project I have to call permit! to be whitelisted or else it's remained unpermitted after tapping it. In this case it would be params[:measurement][:groundtruth].permit!
– nayiaw
Feb 22 '17 at 7:54
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Why are ToLookup and GroupBy different?
...d I ever bother with GroupBy? Why should it exist?
What happens when you call ToLookup on an object representing a remote database table with a billion rows in it?
The billion rows are sent over the wire, and you build the lookup table locally.
What happens when you call GroupBy on such an objec...
Why isn't vector a STL container?
...e-optimization reasons, the C++ standard (as far back as C++98) explicitly calls out vector<bool> as a special standard container where each bool uses only one bit of space rather than one byte as a normal bool would (implementing a kind of "dynamic bitset"). In exchange for this optimization ...
Real world use of JMS/message queues? [closed]
... In our days, instead of using JMS spec, we can use asynchronous method calls. For more info see: docs.oracle.com/javaee/6/tutorial/doc/gkkqg.html
– geo
Mar 13 '18 at 8:56
3
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Returning value from called function in a shell script
I want to return the value from a function called in a shell script. Perhaps I am missing the syntax. I tried using the global variables. But that is also not working. The code is:
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What arguments are passed into AsyncTask?
...mentation Says that :
An asynchronous task is defined by 3 generic types, called Params, Progress and Result, and 4 steps, called onPreExecute, doInBackground, onProgressUpdate and onPostExecute.
AsyncTask's generic types :
The three types used by an asynchronous task are the following:
Params,...
How can I group data with an Angular filter?
...PDATE: jsbin Remember the basic requirements to use angular.filter, specifically note you must add it to your module's dependencies:
(1) You can install angular-filter using 4 different methods:
clone & build this repository
via Bower: by running $ bower install angular-filter from...