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What is the syntax rule for having trailing commas in tuple definitions?
...hen you won't add another line to the end expecting to add another element and instead just creating a valid expression:
a = [
"a",
"b"
"c"
]
Assuming that started as a 2 element list that was later extended it has gone wrong in a perhaps not immediately obvious way. Always include the t...
rails - Devise - Handling - devise_error_messages
...error_messsages! method is just a stub (though it contains implementation) and that we're supposed to override/replace it. It would have been nice if this was pointed out somewhere in the wiki, which is why i guess there are a few people like us that have been guessing.
So I'm going to try reopenin...
What is the difference between a 'closure' and a 'lambda'?
Could someone explain? I understand the basic concepts behind them but I often see them used interchangeably and I get confused.
...
Setting different color for each series in scatter plot on matplotlib
...
I don't know what you mean by 'manually'. You can choose a colourmap and make a colour array easily enough:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.cm as cm
x = np.arange(10)
ys = [i+x+(i*x)**2 for i in range(10)]
colors = cm.rainbow(np.linspace(0, 1, len(ys)))
f...
Listing and deleting Git commits that are under no branch (dangling?)
...up by git gc.
Expiry is regulated by the gc.pruneexpire, gc.reflogexpire, and gc.reflogexpireunreachable settings. Cf. git help config.
The defaults are all quite reasonable.
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Converting dd/mm/yyyy formatted string to Datetime [duplicate]
I am new to DotNet and C#. I want to convert a string in mm/dd/yyyy format to DateTime object. I tried the parse function like below but it is throwing a runtime error.
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IntelliJ IDEA 13 uses Java 1.5 despite setting to 1.7
...ng can be added in default maven projects. Use Preferences | Editor | File and Code Templates | Maven | Maven Projects.xml <properties> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> </proper...
How to see which commits in one branch aren't in the other?
I have two branches devel and next . In devel I have a more or less huge amount of commits. Some of the commits are cherry picked in next . Also I added some commits to next which are merged to devel .
...
Sass .scss: Nesting and multiple classes?
...ng the &.
This notation is most often used to write pseudo-elements and -classes:
.element{
&:hover{ ... }
&:nth-child(1){ ... }
}
However, you can place the & at virtually any position you like*, so the following is possible too:
.container {
background:red;
#...
Is it possible to start a shell session in a running container (without ssh)
I was naively expecting this command to run a bash shell in a running container :
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