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Logging levels - Logback - rule-of-thumb to assign log levels
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473
I mostly build large scale, high availability type systems, so my answer is biased towards looki...
Why exactly is eval evil?
...tors:
(let ((ops '(+ *)))
(dolist (op ops)
(print (eval (list op 1 2 3)))))
That's better written as:
(let ((ops '(+ *)))
(dolist (op ops)
(print (funcall op 1 2 3))))
There are lots of examples where beginners learning Lisp think they need EVAL, but they don't need it - since expressi...
overlay two images in android to set an imageview
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235
You can skip the complex Canvas manipulation and do this entirely with Drawables, using LayerDr...
Delete the first three rows of a dataframe in pandas
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Use iloc:
df = df.iloc[3:]
will give you a new df without the first three rows.
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NSObject +load and +initialize - What do they do?
... return 0;
}
This program prints two lines of output:
2012-11-10 16:18:38.984 testApp[7498:c07] in Superclass initialize; self = Superclass
2012-11-10 16:18:38.987 testApp[7498:c07] in Superclass initialize; self = Subclass
Since the system sends the initialize method lazily, a class won't rec...
How can I trim leading and trailing white space?
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13 Answers
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How to determine the longest increasing subsequence using dynamic programming?
...N) = O(N log N)
Now let's do a real example:
Collection of integers:
2 6 3 4 1 2 9 5 8
Steps:
0. S = {} - Initialize S to the empty set
1. S = {2} - New largest LIS
2. S = {2, 6} - New largest LIS
3. S = {2, 3} - Changed 6 to 3
4. S = {2, 3, 4} - New largest LIS
5. S = {1, 3, 4} - Changed 2 to 1...
What does the clearfix class do in css? [duplicate]
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3 Answers
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Can you explain the HttpURLConnection connection process?
... connection. This is data that you are sending
// to the server
// 3. No. Sending the data is conducted here. We established the
// connection with getOutputStream
writer.write("message=" + message);
// Closes this output stream and releases any system resources
// associate...
Flexbox and Internet Explorer 11 (display:flex in ?)
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153
According to http://caniuse.com/#feat=flexbox:
"IE10 and IE11 default values for flex are 0 0 a...