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How do I copy to the clipboard in JavaScript?
...focused portion available in Chrome 66 (March 2018)
Access is asynchronous and uses JavaScript Promises, can be written so security user prompts (if displayed) don't interrupt the JavaScript in page.
Text can be copied to the clipboard directly from a variable.
Only supported on pages served over HT...
Undo a merge by pull request?
...though I could just break this down step-by-step.
You will need to fetch and checkout the latest upstream changes like so, e.g.:
git fetch upstream
git checkout upstream/master -b revert/john/foo_and_bar
Taking a look at the commit log, you should find something similar to this:
commit b76a5f...
Different bash prompt for different vi editing mode?
...have a prompt that depends on the mode you are currently in (insert or command). How does one find out this editing mode?
8...
C++, Free-Store vs Heap
...ce.
Do compilers make a distinction between the two terms? ( Free store and Heap , not new/malloc )
7 Answers
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IllegalArgumentException or NullPointerException for a null parameter? [closed]
I have a simple setter method for a property and null is not appropriate for this particular property. I have always been torn in this situation: should I throw an IllegalArgumentException , or a NullPointerException ? From the javadocs, both seem appropriate. Is there some kind of an understood...
What's the difference between Spring Data's MongoTemplate and MongoRepository?
...write an application with which I can do complex queries using spring-data and mongodb. I have been starting by using the MongoRepository but struggled with complex queries to find examples or to actually understand the Syntax.
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Foreign Key naming scheme
I'm just getting started working with foreign keys for the first time and I'm wondering if there's a standard naming scheme to use for them?
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How do I create and read a value from cookie?
How can I create and read a value from a cookie in JavaScript?
19 Answers
19
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Invoking JavaScript code in an iframe from the parent page
Basically, I have an iframe embedded in a page and the iframe has some JavaScript routines I need to invoke from the parent page.
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Do I cast the result of malloc?
...'t cast the result, since:
It is unnecessary, as void * is automatically and safely promoted to any other pointer type in this case.
It adds clutter to the code, casts are not very easy to read (especially if the pointer type is long).
It makes you repeat yourself, which is generally bad.
It can h...