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Boolean Field in Oracle
... guess i should say double length twos complement floating point), Binary, string, etc. all assume a value is provided but database implementations always add a null value option Boolean isn't any different
– MikeT
Oct 7 '13 at 8:50
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How do you determine the size of a file in C?
...is:
#include <sys/stat.h>
#include <sys/types.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
off_t fsize(const char *filename) {
struct stat st;
if (stat(filename, &st) == 0)
return st.st_size;
fprintf(stderr, "Cannot determine ...
How to print time in format: 2009‐08‐10 18:17:54.811
...ot want the space between the day and hour, just remove it from the format string.
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How to convert byte array to string and vice versa?
I have to convert a byte array to string in Android, but my byte array contains negative values.
22 Answers
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How to remove last n characters from every element in the R vector
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Note: This returns the original string if it is longer then number of characters to cut. Consider gsub('.{5}$', '', 'abcd').
– Tomas Greif
Jan 17 '15 at 7:08
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Is short-circuiting logical operators mandated? And evaluation order?
...nt after the evaluation of the first expression (12).
In C++ there is an extra trap: short-circuiting does NOT apply to types that overload operators || and &&.
Footnote 12: The operators indicated in this paragraph are the built-in operators, as described in clause 5. When one of thes...
How do I pass data between Activities in Android application?
...sessionId);
startActivity(intent);
Access that intent on next activity:
String sessionId = getIntent().getStringExtra("EXTRA_SESSION_ID");
The docs for Intents has more information (look at the section titled "Extras").
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[since C++11] std::array的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...。array的出现代表着C++的代码更进一步现代化，就像std::string的出现代替了c风格字符串并且能和STL配合工作一样，array的 #前言
本文总结了STL中的序列式容器array的用法及注意事项。array的出现代表着C++的代码更进一步“现代...
Unicode Processing in C++
...Make sure you are always using your unicode library for mundane tasks like string length, capitalization status, etc. Never use standard library builtins like is_alpha unless that is the definition you want.
I can't say it enough: never iterate over the indices of a string if you care about correctn...
Sprintf equivalent in Java
... with the 1.5 release but I can't seem to find how to send the output to a string rather than a file (which is what sprintf does in C). Does anyone know how to do this?
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