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ANTLR: Is there a simple example?
...cute the following command on your shell/command prompt:
java -cp antlr-3.2.jar org.antlr.Tool Exp.g
It should not produce any error message, and the files ExpLexer.java, ExpParser.java and Exp.tokens should now be generated.
To see if it all works properly, create this test class:
import org.a...
log4j configuration via JVM argument(s)?
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162
Do you have a log4j configuration file ? Just reference it using
-Dlog4j.configuration={path t...
Build an ASCII chart of the most commonly used words in a given text [closed]
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votes
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How do I profile memory usage in Python?
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123
This one has been answered already here: Python memory profiler
Basically you do something lik...
Razor View throwing “The name 'model' does not exist in the current context”
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22 Answers
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Python Dictionary to URL Parameters
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256
Use urllib.urlencode(). It takes a dictionary of key-value pairs, and converts it into a form ...
Using CSS how to change only the 2nd column of a table
Using css only, how can I override the css of only the 2nd column of a table.
5 Answers
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How to find the kth smallest element in the union of two sorted arrays?
...mplexity here is O(log k), which is O(log N + log M).
Pseudo-code:
i = k/2
j = k - i
step = k/4
while step > 0
if a[i-1] > b[j-1]
i -= step
j += step
else
i += step
j -= step
step /= 2
if a[i-1] > b[j-1]
return a[i-1]
else
return b[j-1]...
What's the difference between deadlock and livelock?
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402
Taken from http://en.wikipedia.org/wiki/Deadlock:
In concurrent computing, a deadlock is a stat...
Pandas - Get first row value of a given column
...ect the ith row, use iloc:
In [31]: df_test.iloc[0]
Out[31]:
ATime 1.2
X 2.0
Y 15.0
Z 2.0
Btime 1.2
C 12.0
D 25.0
E 12.0
Name: 0, dtype: float64
To select the ith value in the Btime column you could use:
In [30]: df_test['Btime'].iloc[0]
Out[3...