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How to check if element has any children in Javascript?
... (as opposed to text nodes, attribute nodes, etc.) on all modern browsers (and IE8 — in fact, even IE6) you can do this: (thank you Florian!)
if (element.children.length > 0) { // Or just `if (element.children.length)`
// It has at least one element as a child
}
That relies on the child...
Is sizeof(bool) defined in the C++ language standard?
I can't find an answer in the standard documentation. Does the C++ language standard require sizeof(bool) to always be 1 (for 1 byte), or is this size implementation-defined?
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How can I list all tags in my Git repository by the date they were created?
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Sorting by tag creation date works with annotated and lightweight tags:
git for-each-ref --sort=creatordate --format '%(refname) %(creatordate)' refs/tags
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GraphViz - How to connect subgraphs?
...t a dependency diagram. I need to be able to have nodes inside a container and to be able to make nodes and/or containers dependent on other nodes and/or containers.
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Eclipse: have the same file open in two editors?
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Open your file and then Window->New Editor (Note: in newer versions it will be called New Window)
Then, click on its tab and drag it somewhere else to have two editors of the same file
Update: as mentioned by moschlar, From version 4.4...
“Diff” an image using ImageMagick
...riginal image. Now, I need to compare the original to the written on image and extract just the writing in image format.
2 ...
Python memoising/deferred lookup property decorator
...f the instance, but they're a real bottleneck to calculate that first time and only really accessed for special cases. Hence they can also be cached after they've been retrieved from the database (this therefore fits the definition of memoisation where the input is simply "no input").
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use Winmerge inside of Git to file diff
...inMergeU.exe" -e -u -dl "Local" -dr "Remote" "$1" "$2"
(see WinMerge Command-line options)
git difftool
will now launch WinMerge.
If you want git diff to launch WinMerge, just set:
set GIT_EXTERNAL_DIFF=winmerge.sh
But the real added value comes from the ability to use that same diff too...
Webrick as production server vs. Thin or Unicorn?
... workers (in particular, pre-forking, life cycle management, asynchronous handling, etc), redirects, rewriting, etc
When I mention redirects/rewrites, I'm referring to the fact that using Webrick, you have to handle rewrites at a different layer (Rack, Sinatra, Rails, custom Webrick code, etc). Th...
Set Focus on EditText
I have an EditText-Field and set an OnFocusChangeListener for it. When it has lost focus, a method is called, which checks the value of the EditText with one in the database. If the return-value of the method is true, a toast is shown and the focus should get back on the EditText again. The focus sh...