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g++ undefined reference to typeinfo
...e: In case of dynamic library linking you may get a mangled name. Use c++filt <mangledNameVariable> to get it in a readable form. The typeinfo error with a class name was in my case because of a missing virtual destructor implementation in some base class.
– chmike
...
Why is string concatenation faster than array join?
... InternalArray(len + 1);
parts[0] = this_as_string;
for (var i = 0; i < len; i++) {
var part = %_Arguments(i);
parts[i + 1] = TO_STRING_INLINE(part);
}
return %StringBuilderConcat(parts, len + 1, "");
}
So, internally they optimize it by creating an InternalArray (the parts vari...
Google Play on Android 4.0 emulator
...DK"
After version 2.0 Genymotion does not come with Play Services by default, but it can be easily installed manually. Just download the right version from here and drag and drop into the virtual device (emulador).
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how to remove only one style property with jquery
...move a style that has been applied
with a CSS rule in a stylesheet or
<style> element.
Since your styles are inline, you can write:
$(selector).css("-moz-user-select", "");
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imp...
What does [ N … M ] mean in C aggregate initializers?
...h tell you so.
How does it work here?
The preprocessor replaces #include <asm/unistd.h> with its actual contents(it defines miscellaneous symbolic constants and types, and declares miscellaneous functions) in the range based construct, which are then further used for initializing the array of...
how do i do an insert with DATETIME now inside of SQL server mgmt studio
...dBy])
VALUES
(0, 'Joe', 'Thomas',
GETDATE(), <LastUpdatedBy, nvarchar(50),>)
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...
Redo merge of just a single file
...wrong place. The solution turned out to be quite simple.
git checkout -m <file>
This returns the file to its conflicted state. I can then run git mergetool to redo the merge.
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improv...
Is it better practice to use String.format over string Concatenation in Java?
...ion {
long start = System.currentTimeMillis();
for(int i = 0; i < 1000000; i++){
String s = "Hi " + i + "; Hi to you " + i*2;
}
long end = System.currentTimeMillis();
System.out.println("Concatenation = " + ((end - start)) + " millisecond") ;
start = System.currentTimeMilli...
How to send email attachments?
...ename
from email.mime.application import MIMEApplication
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.utils import COMMASPACE, formatdate
def send_mail(send_from, send_to, subject, text, files=None,
server="127.0.0.1"):
assert isi...
java.sql.SQLException: Incorrect string value: '\xF0\x9F\x91\xBD\xF0\x9F…'
...AL ALIEN (U+1F47D) and BROKEN HEART (U+1F494) which
are not in the basic multilingual plane. They cannot be even represented in java as one char, "????????".length() == 4. They are definitely not null characters and one will see squares if you are not using fonts that support them.
MySQL's utf8 onl...