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Why are mutable structs “evil”?
...e around.
If your struct is immutable then all automatic copies resulting from being passed by value will be the same.
If you want to change it you have to consciously do it by creating a new instance of the struct with the modified data. (not a copy)
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Reversing a linked list in Java, recursively
...ode in one reply that spells it out, but you might find it easier to start from the bottom up, by asking and answering tiny questions (this is the approach in The Little Lisper):
What is the reverse of null (the empty list)? null.
What is the reverse of a one element list? the element.
What is the...
How do I force files to open in the browser instead of downloading (PDF)?
...ill depend on your HTTP server (or, if you are generating the PDF response from server-side code: your server-side programming language).
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Is there a difference between using a dict literal and a dict constructor?
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I think you have pointed out the most obvious difference. Apart from that,
the first doesn't need to lookup dict which should make it a tiny bit faster
the second looks up dict in locals() and then globals() and the finds the builtin, so you can switch the behaviour by defining a loca...
What is the point of the diamond operator () in Java 7?
...sed in new code unless
you absolutely have to.
Now, if Java had generics from the beginning and didn't have types, such as LinkedList, that were originally created before it had generics, it probably could have made it so that the constructor for a generic type automatically infers its type parame...
Real World Use of Zookeeper [closed]
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Norbert is a good example from a scalable production system. I general, it integrates Netty, Protocol Buffers and Zookeeper
into a lightweight framework for running clustered services. Protocol Buffers are used to specify your service API, Netty impl...
Using ZXing to create an Android barcode scanning app [duplicate]
...ode scanning.
The easiest way to do this is to call the ZXing SCAN Intent from your application, like this:
public Button.OnClickListener mScan = new Button.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent("com.google.zxing.client.android.SCAN");
int...
How to create a HTTP server in Android? [closed]
...e a file located on the device , so that others can download it (or stream from it) ?
– android developer
Jun 16 '14 at 20:37
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contenteditable change events
...e means of changing the content: the user can also use cut, copy and paste from the Edit or context browser menus, so you may want to handle the cut copy and paste events too. Also, the user can drop text or other content, so there are more events there (mouseup, for example). You may want to poll t...
What is the cleanest way to ssh and run multiple commands in Bash?
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Hmm...how is this different from using input redirection, i.e. ssh blah_server < commands-to-execute-remotely.sh?
– flow2k
Feb 27 '18 at 19:26
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