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What are the “standard unambiguous date” formats for string-to-date conversion in R?
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edited Aug 3 '15 at 20:02
answered Feb 7 '13 at 16:10
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Is there a generator version of `string.split()` in Python?
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edit: I have just confirmed that this takes constant memory in python 3.2.1, assuming my testing methodology was correct. I created a string of very large size (1GB or so), then iterated through the iterable with a for loop (NOT a list comprehension, which would have generated extra memory). Th...
How do I base64 encode (decode) in C?
..., 'v',
'w', 'x', 'y', 'z', '0', '1', '2', '3',
'4', '5', '6', '7', '8', '9', '+', '/'};
static char *decoding_table = NULL;
static int mod_table[] = {0, 2, 1};
char *base64_encode(const unsigned char *data,
size_t ...
Where can I find the Java SDK in Linux after installing it?
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13 Answers
13
Active
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Copy object values in Visual Studio debug mode
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answered May 31 '10 at 9:19
Omer RavivOmer Raviv
10.4k44 gold badges3939 silver badges8181 bronze badges
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Limiting floats to two decimal points
I want a to be rounded to 13.95 .
26 Answers
26
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What does the construct x = x || y mean?
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It means the title argument is optional. So if you call the method with no arguments it will use a default value of "Error".
It's shorthand for writing:
if (!title) {
title = "Error";
}
This kind of shorthand trick with boolean expressions is common in Perl too. W...
C++及Windows异常处理(try，catch; __try,__finally, __except) - C/C++ - ...
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__try{
puts( "in try ");
*p = 13; // causes an access violation exception;
}__finally{
puts( "in finally ");
}
}__except(puts( "in filter "), 1){
puts( "in except ");
}
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When I catch an exception, how do I get the type, file, and line number?
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389
import sys, os
try:
raise NotImplementedError("No error")
except Exception as e:
exc_...