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Why do people use __(double underscore) so much in C++
...often used in names of library functions (such as "_main" and "_exit"). In order to avoid collisions, do not begin an identifier with an underscore.
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Java FileReader encoding issue
... @JoachimSauer Actually, this is one of the purposes of the Byte Order Mark, along with.. well.. establishing the byte order! :) As such I find it weird that Java's FileReader is not able to automatically detect UTF-16 that has such a BOM... In fact I once wrote a UnicodeFileReader that ...
Return a value if no rows are found in Microsoft tSQL
...returns 2 rows, is it guaranteed the rows will be returned in the expected order?
– Sarsaparilla
Jan 22 '15 at 18:26
A...
Is it better to use std::memcpy() or std::copy() in terms to performance?
... allowed to lie within the output range. This is a little odd, because the order of assignments is defined, and a call might be UB even though the effect of those assignments, in that order, is defined. But I suppose the restriction allows vectorization optimizations.
– Steve J...
How to correctly use the extern keyword in C
..._2();
int v3 = function_3();
}
int function_2(void) return 1234;
In order to compile and link, we must define "function_2" in the same source code file where we call that function. The two other functions could be defined in different source code ".C" or they may be located in any binary file...
Detecting endianness programmatically in a C++ program
...s just to use the built in network byte conversion ops (since network byte order is always big endian).
if ( htonl(47) == 47 ) {
// Big endian
} else {
// Little endian.
}
Bit fiddling could be faster, but this way is simple, straightforward and pretty impossible to mess up.
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What is the real overhead of try/catch in C#?
...be aware that a whole bunch of runtime/reflection related stuff happens in order to populate the members of the exception class such as the stack trace object and the various type members etc.
I believe that this is one of the reasons why the general advice if you are going to rethrow the exception...
Can we delete an SMS in Android before it reaches the inbox?
... improve the user experience by processing specially-formatted messages in order to show them in a nice Android-specific UI.
As of Android 1.6, incoming SMS message broadcasts (android.provider.Telephony.SMS_RECEIVED) are delivered as an "ordered broadcast" — meaning that you can tell the system ...
How to echo with different colors in the Windows command line
... check carlos' color function -> http://www.dostips.com/forum/viewtopic.php?f=3&t=4453
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How to add an Access-Control-Allow-Origin header
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In your file.php of request ajax, can set value header.
<?php header('Access-Control-Allow-Origin: *'); //for all ?>
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