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How do you determine the ideal buffer size when using FileInputStream?
... block size. This means that one of your stream reads could result in multiple disk block reads - but those reads will always use a full block - no wasted reads.
Now, this is offset quite a bit in a typical streaming scenario because the block that is read from disk is going to still be in memory ...
How can I make Visual Studio wrap lines at 80 characters?
...ions >> Text Editor >> All Languages >> General >> Select Word Wrap.
I dont know if you can select a specific number of columns?
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How do iOS Push Notifications work?
...e those notifications. Each device establishes an accredited and encrypted IP connection with the service and receives notifications over this persistent connection. Providers connect with APNs through a persistent and secure channel while monitoring incoming data intended for their client applicati...
Convert character to ASCII numeric value in java
I have String name = "admin";
then I do String charValue = name.substring(0,1); //charValue="a"
22 Answers
...
xtree(1796): warning C4800: “int”: 将值强制为布尔值“true”或“false...
...ng,CPTCensorStatusItem *>>,false>,
1> _Ty1=std::basic_string<char,std::char_traits<char>,std::allocator<char>>,
1> _Ty2=CPTCensorStatusItem *,
1> _Valty=std::pair<std::basic_string<char,std::char_traits<char>,std::allocator<char>>,CPTCensorStatusItem *>
1> ...
Why use pointers? [closed]
...and much confusion. ;-) If we talk about simple data types such as int and char there is little difference between an array and a pointer.
These declarations are very similar (but not the same - e.g., sizeof will return different values):
char* a = "Hello";
char a[] = "Hello";
You can reach any e...
Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./
...al letters represent the negation of their lowercase counterparts.
\W will select all non "word" characters equivalent to [^a-zA-Z0-9_]
\S will select all non "whitespace" characters equivalent to [ \t\n\r\f\v]
_ will select "_" because we negate it when using the \W and need to add it back in
...
How to print (using cout) a number in binary form?
...senting the value, then stream that to cout.
#include <bitset>
...
char a = -58;
std::bitset<8> x(a);
std::cout << x << '\n';
short c = -315;
std::bitset<16> y(c);
std::cout << y << '\n';
...
Does IMDB provide an API? [closed]
... (which is in the imdb${searchphrase} format). Alternatively, one could strip or replace the padding via a local proxy.
// 1) Vanilla JavaScript (JSON-P)
function addScript(src) { var s = document.createElement('script'); s.src = src; document.head.appendChild(s); }
window.imdb$foo = function (res...
char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注IT技能提升
char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时，发现在x86平台下是按照有符号处理的，但是在ARM32下被当成了无符号导致问题，ARM64正常有符号。经调查，在PC上，char类型默认为signed-char,但是在一些嵌入式设备
char强转...