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Is there a practical use for weak references? [duplicate]
...ta. It can also be used to keep information about objects used else where and you don't know when those objects are discarded.
BTW Soft References are like Weak references, but they will not always be cleaned up immediately. The GC will always discard weak references when it can and retain Soft R...
Does “display:none” prevent an image from loading?
...if the browser is on a small CPU computer, not having to render the image (and layout the page) will make the whole rendering operation faster but I doubt this is something that really makes sense today.
If you want to prevent the image from loading you may simply not add the IMG element to your do...
How to change to an older version of Node.js
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One way is to use NVM, the Node Version Manager.
Use following command to get nvm
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.34.0/install.sh | bash
You can find it at https://github.com/creationix/nvm
It allows you to easily install and manage multiple versions of node...
What does the ??!??! operator do in C?
...?! is a trigraph that translates to |. So it says:
!ErrorHasOccured() || HandleError();
which, due to short circuiting, is equivalent to:
if (ErrorHasOccured())
HandleError();
Guru of the Week (deals with C++ but relevant here), where I picked this up.
Possible origin of trigraphs or as @...
In PowerShell, how do I define a function in a file and call it from the PowerShell commandline?
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Try this on the PowerShell command line:
. .\MyFunctions.ps1
A1
The dot operator is used for script include.
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Maven in Eclipse: step by step installation [closed]
I have spent been on the Maven site reading the 5- and 30-minute tutorials, and trialing Maven out for the first time.
13 A...
How to clone ArrayList and also clone its contents?
How can I clone an ArrayList and also clone its items in Java?
21 Answers
21
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Best XML parser for Java [closed]
...most, UTF-8 encoded) XML files, rummage around looking at various elements and attributes, perhaps modify a few and write the XML back out again to disk (preferably with nice, indented formatting).
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Eclipse: The declared package does not match the expected package
...ng Projects into Workspace, choose the folder where the project is located and everything is imported - but the package names of the project don't seem to be what Eclipse expects. The package names all have a prefix:
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Java 8: How do I work with exception throwing methods in streams?
Suppose I have a class and a method
7 Answers
7
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