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MySql server startup error 'The server quit without updating PID file '
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From my own experience - Be careful that after you've done the sudo chown that you don't currently have some mysql processes running under another user or root. ps -ef | grep mysql will validate that you have nothing running ...
How to fix 'android.os.NetworkOnMainThreadException'?
... brackets and a call to execute()). On the other hand, even a single fetch from a site as you mention brings a significant lag in the UI responsiveness. Don't be lazy.
– Zoltán
Sep 4 '12 at 9:39
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What's the “Content-Length” field in HTTP header?
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Combine this answer with the answer from Tom Cabanski and you have all the information you need. In case of text you can count the number of characters since ASCII is 8 bit.
– hcpl
Sep 24 '12 at 8:45
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Will the base class constructor be automatically called?
... What you say is true. However, there is nothing preventing Base from having a parameterless constructor in addition to the parameterized constructor that set SomeNumber to, say, a random number. AlwaysThreeDerived would still use the base(3) call, but another class (call it RandomDerived...
What are the best practices for SQLite on Android?
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Inserts, updates, deletes and reads are generally OK from multiple threads, but Brad's answer is not correct. You have to be careful with how you create your connections and use them. There are situations where your update calls will fail, even if your database doesn't get co...
window.close and self.close do not close the window in Chrome
...ntroduced a while ago, to stop various malicious exploits and annoyances.
From the latest working spec for window.close():
The close() method on Window objects should, if all the following conditions are met, close the browsing context A:
The corresponding browsing context A is script-c...
How much faster is Redis than mongoDB?
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Rough results from the following benchmark: 2x write, 3x read.
Here's a simple benchmark in python you can adapt to your purposes, I was looking at how well each would perform simply setting/retrieving values:
#!/usr/bin/env python2.7
im...
How to convert a NumPy array to PIL image applying matplotlib colormap
...scale to the 0-255 range.
Convert to integers, using np.uint8().
Use Image.fromarray().
And you're done:
from PIL import Image
from matplotlib import cm
im = Image.fromarray(np.uint8(cm.gist_earth(myarray)*255))
with plt.savefig():
with im.save():
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How to find the lowest common ancestor of two nodes in any binary tree?
... possible. For both nodes in question construct a list containing the path from root to the node by starting at the node, and front inserting the parent.
So for 8 in your example, you get (showing steps): {4}, {2, 4}, {1, 2, 4}
Do the same for your other node in question, resulting in (steps not ...
Access string.xml Resource File from Java Android Code
How do you access the values in the res/values/string.xml resource file from the Android Activity class ?
5 Answers
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