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What is __future__ in Python used for and how/when to use it, and how it works
...inclusion, you can slowly be accustomed to incompatible changes or to such ones introducing new keywords.
E.g., for using context managers, you had to do from __future__ import with_statement in 2.5, as the with keyword was new and shouldn't be used as variable names any longer. In order to use wit...
An item with the same key has already been added
...k to make sure there's no similar edmx names (table column has "CURRENCY", one of Navigation Properties name had "Currency")
– Robert Koch
Mar 1 '12 at 23:06
7
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Clear form fields with jQuery
...e/she needs to change the selector from an example code to the appropriate one...
– Sk8erPeter
Oct 14 '14 at 13:10
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'adb' is not recognized as an internal or external command, operable program or batch file
...Path and click Edit...
You then need to append a ; if there isn't already one at the end of the Variable value field, and then append C:\Users\<your-username>\AppData\Local\Android\sdk\platform-tools; to that same field.
Then click the three OK buttons to get out.
If you already have a Comm...
Is String.Format as efficient as StringBuilder
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One problem with the benchmarks on Jerry Dixon's page is that he never calls .ToString() on the StringBuilder object. Over a great many iterations, that time makes a big difference, and means that he's not quite comparing ap...
Vibrate and Sound defaults on notification
... The vibration now has a delay of 1000 ms. If you set the first one to 0, it will go off instantly. It's a { delay, vibrate, sleep, vibrate, sleep } pattern.
– Tom
Apr 30 '15 at 11:22
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C# SQL Server - Passing a list to a stored procedure
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And what happens when there is a comma in one of your data fields?
– Kevin Panko
Jun 27 '14 at 20:30
3
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What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
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This is exactly why one might prefer the dict() method for initialization, it forces the dictionary keys to be valid identifiers, so they are compatible with, for example, **kwargs, and keys are valid attribute names.
– Ruf...
Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
...pread(tmp, y, z)
## x a b c
## 1 x 1 2 3
## 2 y 3 3 2
Using reshape2:
One of the first steps toward the tidyverse was the reshape2 package.
To get a matrix use acast:
library(reshape2)
acast(tmp, x~y, value.var="z")
## a b c
## x 1 2 3
## y 3 3 2
Or to get a data frame, use dcast, as here...
How do I make background-size work in IE?
... element which we defined this, those links and buttons wont work. Does anyone know a method to fix this?
– rubyprince
Jun 19 '12 at 14:35
2
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