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How do you round a floating point number in Perl?
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13 Answers
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How to delete last item in list?
...icing notation to keep everything except the last item:
record = record[:-1]
But a better way is to delete the item directly:
del record[-1]
Note 1: Note that using record = record[:-1] does not really remove the last element, but assign the sublist to record. This makes a difference if you ru...
Is there a common Java utility to break a list into batches?
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How to use background thread in swift?
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Why doesn't Java allow generic subclasses of Throwable?
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155
As mark said, the types are not reifiable, which is a problem in the following case:
try {
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Undefined behavior and sequence points
... C++03
This answer is for the older versions of the C++ standard. The C++11 and C++14 versions of the standard do not formally contain 'sequence points'; operations are 'sequenced before' or 'unsequenced' or 'indeterminately sequenced' instead. The net effect is essentially the same, but the term...
What is the difference between LL and LR parsing?
...back to some nonterminal by reversing a production.
As an example, an LR(1) parser (with one token of lookahead) might parse that same string as follows:
Workspace Input Action
---------------------------------------------------------
int + int + int Shift
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how to concatenate two dictionaries to create a new one in Python? [duplicate]
...nate the items and call dict on the resulting list:
$ python -mtimeit -s'd1={1:2,3:4}; d2={5:6,7:9}; d3={10:8,13:22}' \
'd4 = dict(d1.items() + d2.items() + d3.items())'
100000 loops, best of 3: 4.93 usec per loop
Fastest: exploit the dict constructor to the hilt, then one update:
$ python -mtim...
Is there a difference between using a dict literal and a dict constructor?
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