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What is the easiest way to remove all packages installed by pip?
...ng command in place requirements.txt).
pip freeze > requirements.txt
Now to remove one by one
pip uninstall -r requirements.txt
If we want to remove all at once then
pip uninstall -r requirements.txt -y
If you're working on an existing project that has a requirements.txt file and your e...
Vim users, where do you rest your right hand? [closed]
... avoid overwriting base Vim features: Toss whatever used to be on ; to the now-empty h button
As a cute bonus, the "l" key now stands for "left" ;)
noremap l h
noremap ; l
noremap h ;
The previous "runners-up", who both use "left-down-up-right" layout:
Choice 1: "hjkl"
@al...
What's the best way to retry an AJAX request on failure using jQuery?
... return settings => $oldAjax(settings).always(check)
})($.ajax);
// now we can use the "retries" property if we need to retry on fail
$.ajax({
type : 'GET',
url : 'http://www.whatever123.gov',
timeout : 2000,
retries : 3, // <-------...
How to show android checkbox at right side?
...
never mind - i've set a selector to the layout and now it's ok .
– android developer
Apr 24 '12 at 12:03
...
From io.Reader to string in Go
...uf.Bytes()
s := *(*string)(unsafe.Pointer(&b))
There we go, you have now efficiently converted your byte array to a string. Really, all this does is trick the type system into calling it a string. There are a couple caveats to this method:
There are no guarantees this will work in all go com...
How would you access Object properties from within an object method? [closed]
...erform a calculation, and then set some other value in the object, better known as procedural programming. You'd be better served to simply tell the object to do what you were going to in the first place; also known as the Information Expert idiom.
Getters and setters, however, are necessary evils ...
How can I reverse the order of lines in a file?
...
There's the well-known sed tricks:
# reverse order of lines (emulates "tac")
# bug/feature in HHsed v1.5 causes blank lines to be deleted
sed '1!G;h;$!d' # method 1
sed -n '1!G;h;$p' # method 2
(Explanation: prepen...
Are there good reasons not to use an ORM? [closed]
...te for some smaller projects which I mostly coded and designed on my own. Now, before starting some bigger project, the discussion arose how to design data access and whether or not to use an ORM layer. As I am still in my apprenticeship and still consider myself a beginner in enterprise programmin...
Creating an iframe with given HTML dynamically
...
Interesting; I hadn't seen this technique before. I know that the URI encoding/decoding adds a performance hit, yet I've also seen it described as the sole alternative in environments that don't support the srcdoc property. Is there a downside to the document.write approach?
...
Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine
... mode (This is the answer I found when I did an extensive search for this known issue) and that causes other part of my code to break.
Fortunately, now Microsoft has released a 64 bit compatible 2010 Office System Driver which can be used as replacement for the traditional Microsoft.Jet.OLEDB.4.0 d...