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How can I check if an element exists in the visible DOM?
How do you test an element for existence without the use of the getElementById method?
25 Answers
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Git push results in “Authentication Failed”
...sword. Instead
you need to generate a personal access token. This can be done in the
application settings of your Github account. Using this token as your
password should allow you to push to your remote repository via HTTPS.
Use your username as usual.
https://help.github.com/articles/cre...
Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
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This probably has do with conflicts in your L2 cache.
Cache misses on matice1 are not the problem because they are accessed sequentially.
However for matice2 if a full column fits in L2 (i.e when you access matice2[0, 0], matice2[1, 0], matic...
How is AngularJS different from jQuery
...r code and generate necessary javascript code (tree-shaking) to shrink the download size down to 35Kish.
Angular2 emulated Shadow DOM. (ref)
This opens a door for server rendering that can address SEO issue and work with Nativescript etc that don't work on browsers.
The official document sit...
Retrieve version from maven pom.xml in code
...le as a resource from the classpath (google for copious examples of how to do this, but here's an example for starters).
In Maven, enable resource filtering. This will cause Maven to copy that file into your output classes and translate the resource during that copy, interpreting the property. You...
Usages of Null / Nothing / Unit in Scala
...n Unit. There is a value Unit so it can actually be returned. From the API docs:
Unit is a subtype of scala.AnyVal. There is only one value of type
Unit, (), and it is not represented by any object in the underlying
runtime system. A method with return type Unit is analogous to a Java
meth...
Which comment style should I use in batch files?
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tl;dr: REM is the documented and supported way to embed comments in batch files.
:: is essentially a blank label that can never be jumped to, whereas REM is an actual command that just does nothing. In neither case (at least on Windows 7) d...
How do I set the default font size in Vim?
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set guifont=Monospace:h20
My recommendation for setting the font is to do (if your version supports it)
set guifont=*
This will pop up a menu that allows you to select the font. After selecting the font, type
set guifont?
To show what the current guifont is set to. After that copy that lin...
How do I delete/remove a shell function?
I have done this:
2 Answers
2
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Bash command to sum a column of numbers [duplicate]
...that will sum a column of numbers. I just want a quick one liner that will do something essentially like this:
10 Answers
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