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How JavaScript closures are garbage collected
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As far as I can tell, this is not a bug but the expected behavior.
From Mozilla's Memory management page: "As of 2012, all modern browsers ship a mark-and-sweep garbage-collector." "Limitation: objects need to be made explicitly unreac...
How do I initialize the base (super) class?
...nit__(123)
def doit(self, foo):
return super(Y, self).doit(foo)
Because python knows about old- and new-style classes, there are different ways to invoke a base method, which is why you've found multiple ways of doing so.
For completeness sake, old-style classes call base methods explicitl...
How to include layout inside layout?
...rent" instead of android:layout_width="fill_parent". fill_parent is deprecated.
– Trinity
May 24 '17 at 14:33
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Freely convert between List and IEnumerable
How can I convert a List<MyObject> to an IEnumerable<MyObject> and then back again?
6 Answers
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Downcasting shared_ptr to shared_ptr?
...le is like the one in Boost, but it doesn't support shared_polymorphic_downcast (or dynamic_pointer_cast or static_pointer_cast for that matter)!
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How do I enter RGB values into Interface Builder?
How can I enter RGB or Hex color values for backgrounds in Interface Builder? I can select predefined colors but I would like to manually enter in RGB values. Where can I do this?
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How can I delete the current line in Emacs?
...-x kill-whole-line`
If you want to delete a number of whole lines, you can prefix the command with a number:
C-u 5 C-S-backspace # deletes 5 whole lines
M-5 C-S-backspace # deletes 5 whole lines
C-u C-S-backspace # delete 4 whole lines. C-u without a number defaults to 4
C-u -5 C...
Git pull after forced update
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To receive the new commits
git fetch
Reset
You can reset the commit for a local branch using git reset.
To change the commit of a local branch:
git reset origin/master --hard
Be careful though, as the documentation puts it:
Resets the index and working tree. Any c...
Undo git stash pop that results in merge conflict
...reset HEAD . (note the trailing dot)
To save the conflicted merge (just in case): git stash
To return to master: git checkout master
To pull latest changes: git fetch upstream; git merge upstream/master
To correct my new branch: git checkout new-branch; git rebase master
To apply the correct stashed...
Inspect element that only appear when other element is mouse overed/entered
...ass icon in the top left to select the tooltip
If the tooltip shows up because of CSS, here's what you can do in that case:
Step-by-step:
Open the DevTools
Select the triggering element in the dev tools (the link)
Right click, and select "force element state", and select ":hover"
Inspect the C...