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Pandas: Looking up the list of sheets in an excel file
...he excel sheet in ExcelFile? Also, say I look up the list of sheets and decide to load N of them, should I at that point call read_excel (the new interface) for each sheet, or stick to x1.parse?
– Amelio Vazquez-Reina
Jul 31 '13 at 18:03
...
Callback when CSS3 transition finishes
...itional libraries these all work with vanilla JS
document.getElementById("myDIV").addEventListener("transitionend", myEndFunction);
function myEndFunction() {
this.innerHTML = "transition event ended";
}
#myDIV {transition: top 2s; position: relative; top: 0;}
div {background: #ede;cursor...
What is the use of “assert” in Python?
...s early in your program, where the cause is clear, rather than later as a side-effect of some other operation.
When you do...
assert condition
... you're telling the program to test that condition, and immediately trigger an error if the condition is false.
In Python, it's roughly equivalent to...
What's a redirect URI? how does it apply to iOS app for OAuth2.0?
...our app from a URL given to a webview. To do this, i simply followed the guide on here:
http://iosdevelopertips.com/cocoa/launching-your-own-application-via-a-custom-url-scheme.html
and
http://inchoo.net/mobile-development/iphone-development/launching-application-via-url-scheme/
note: on those ...
Intellij Idea 9/10, what folders to check into (or not check into) source control?
...
We have a FAQ article covering this question.
[The .idea] format is used by all the recent IDE versions by default.
Here is what you need to share:
All the files under .idea directory in the project root except the workspace.xml and tasks.xml files which store user s...
Rails 3 check if attribute changed
...ributes with their original and new values (in an array).
You can check APIDock for which versions supported these methods.
http://apidock.com/rails/ActiveModel/Dirty
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Get image data url in JavaScript?
... the original file, but a re-encoded version. If you need the result to be identical to the original, see Kaiido's answer.
You will need to create a canvas element with the correct dimensions and copy the image data with the drawImage function. Then you can use the toDataURL function to get a dat...
Django migration strategy for renaming a model and relationship fields
...kemigrations myapp command will ask you if you renamed your model. E.g.: Did you rename the myapp.Foo model to Bar? [y/N] If you answer 'y' your migration will contain the migration.RenameModel('Foo', 'Bar') Same counts for the renamed fields :-)
– ceasaro
Apr...
What's the difference between django OneToOneField and ForeignKey?
...del) and ForeignKey(SomeModel, unique=True). As stated in The Definitive Guide to Django:
OneToOneField
A one-to-one relationship. Conceptually, this is similar to a ForeignKey with unique=True, but the "reverse" side of the relation will directly return a single object.
In contrast to th...
Programmatically fire button click event?
...ode, not manually as a user. Is it possible in iOS development? Please provide your suggestions and guide me how to do that.
...