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Why is a ConcurrentModificationException thrown and how to debug it
...y the set of keys and iterate through them, getting the value for each key from the original map.
– Chochos
Aug 31 '10 at 14:44
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Assign one struct to another in C
...instruction in assembly, the assignment operator simply means moving data from one memory location to another memory location.
The assignment will only do it for immediate members of a structures and will fail to copy when you have Complex datatypes in a structure. Here COMPLEX means that you cant...
Disable cache for some images
...ng?dummy=8484744" />
Or
<img src="image.png?dummy=371662" />
From the point of view of the web-server the same file is accessed, but from the point of view of the browser no caching can be performed.
The random number generation can happen either on the server when serving the page (j...
How to make graphics with transparent background in R using ggplot2?
I need to output ggplot2 graphics from R to PNG files with transparent background. Everything is ok with basic R graphics, but no transparency with ggplot2:
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What are the Ruby Gotchas a newbie should be warned about? [closed]
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Wikipedia Ruby gotchas
From the article:
Names which begin with a capital letter are treated as constants, so local variables should begin with a lowercase letter.
The characters $ and @ do not indicate variable data type as in Perl, but rather f...
How to create ls in windows command prompt?
... file exists to your PATH environment variable
You could then execute ls from a command prompt.
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What does “pending” mean for request in Chrome Developer Window?
...at I couldn't get to load had the word "ad" in the URL, so AdBlock kept it from loading.
Disabling AdBlock fixes this issue.
Renaming the file so that it doesn't contain "ad" in the URL also fixes it, and is obviously a better solution. Unless it's an advertisement, in which case you should leave ...
Performance surprise with “as” and nullable types
...isn't isinst in this case, but the additional unbox.any. This wasn't clear from Hans' answer, as he looked at the JITed code only. In general, the C# compiler will emit an unbox.any after a isinst T? (but will omit it in case you do isinst T, when T is a reference type).
Why does it do that? isinst...
Use dynamic (variable) string as regex pattern in JavaScript
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To create the regex from a string, you have to use JavaScript's RegExp object.
If you also want to match/replace more than one time, then you must add the g (global match) flag. Here's an example:
var stringToGoIntoTheRegex = "abc";
var regex = ...
Chrome ignores autocomplete=“off”
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This answer from September 2015 is basically a copy from the answer in November 2014 down below.
– dsuess
Dec 14 '16 at 11:01
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