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How do I open the SearchView programmatically?
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Expand the SearchView with
searchView.setIconified(false);
and collapse it with
searchView.setIconified(true);
You need to change the value of android:showAsAction from ifRoom|collapseActionView to always. The SearchView's attribute android:iconifiedByDefaul...
How to Generate unique file names in C#
... finds one that doesn't exist. It reads the existing filenames into a HashSet to check for collisions so it's pretty quick (a few hundred filenames per second on my machine), it's thread safe too, and doesn't suffer from race conditions.
For example, if you pass it test.txt, it will attempt to cre...
How do I “un-revert” a reverted Git commit?
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If you haven't pushed that change yet, git reset --hard HEAD^
Otherwise, reverting the revert is perfectly fine.
Another way is to git checkout HEAD^^ -- . and then git add -A && git commit.
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How can I pad a String in Java?
Is there some easy way to pad Strings in Java?
30 Answers
30
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How to find the sum of an array of numbers
Given an array [1, 2, 3, 4] , how can I find the sum of its elements? (In this case, the sum would be 10 .)
43 Answers
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Matplotlib scatterplot; colour as a function of a third variable
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There's no need to manually set the colors. Instead, specify a grayscale colormap...
import numpy as np
import matplotlib.pyplot as plt
# Generate data...
x = np.random.random(10)
y = np.random.random(10)
# Plot...
plt.scatter(x, y, c=y, s=500)
plt.g...
Prepend a level to a pandas MultiIndex
...el to the columns by adding axis=1, since the df.columns doesn't have the "set_index" method like the index, which always bugs me.
– Rutger Kassies
Feb 10 '17 at 12:32
2
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Java how to replace 2 or more spaces with single space in string and delete leading and trailing spa
Looking for quick, simple way in Java to change this string
29 Answers
29
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What is the difference between C# and .NET?
May I know what is the difference between C# and .NET? When I think of C#, right away I would say it is a .NET language, but when I search for job posts, they require candidates to have C# and .NET experience. Can someone give me an explanation?
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Registry Key '…' has value '1.7', but '1.6' is required. Java 1.7 is Installed and the Registry is P
... sure that javapath has the right version and my environment variables are set properly... nothing worked until I fixed that System32 deal. It all has to be on the same page.
– B.K.
Dec 14 '14 at 4:48
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