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scala vs java, performance and memory? [closed]
...he "hip language of the month" club? Nice comments. I particularly enjoyed reading the last paragraph.
– stepanian
Apr 9 '12 at 23:31
21
...
Why em instead of px?
... you are confusing pixels with the px unit. They are not the same thing - read the CSS specs. The px unit is an absolute unit in the same sense as the in unit, or the cm unit, or the pt unit.
– thomasrutter
Nov 13 '14 at 11:04
...
Can't seem to discard changes in Git
... true, makes git convert CRLF at the end of lines in text files to LF
when reading from the filesystem, and
convert in reverse when writing to the
filesystem. The variable can be set to
input, in which case the conversion
happens only while reading from the
filesystem but files are written out
with ...
Running multiple async tasks and waiting for them all to complete
...doesn't start the tasks for you. You have to provide them "hot", meaning already started.
– Yuval Itzchakov
Aug 22 '16 at 8:11
2
...
Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS's? [duplica
...ning behind this is
outside the scope of this posting, but
for further reading see:
http://www.microsoft.com/technet/prodtechnol/sql/2005/frcqupln.mspx
and
http://msdn.microsoft.com/en-us/library/ms181055.aspx
and http://www.simple-talk.com/sql/performance/execution-plan-basics/
"In...
public friend swap member function
... and others mistakenly thought would be the case. If you were bit by this, read here.
In short: the member function is just noise, the specialization is ugly and incomplete, but the friend function is complete and works. And when you swap, either use boost::swap or an unqualified swap with std::s...
Import CSV to mysql table
...'"'
lines terminated by '\n'
(uniqName, uniqCity, uniqComments)
as read on: Import CSV file directly into MySQL
EDIT
For your case, you'll need to write an interpreter first, for finding the first row, and assigning them as column names.
EDIT-2
From MySQL docs on LOAD DATA syntax:
...
Setting Django up to use MySQL
... 'ENGINE': 'django.db.backends.mysql',
'OPTIONS': {
'read_default_file': '/path/to/my.cnf',
},
}
}
You also need to create the /path/to/my.cnf file with similar settings from above
[client]
database = DB_NAME
host = localhost
user = DB_USER
password = DB_PASSWORD...
What is the “FS”/“GS” register intended for?
...ability of segment registers in 64 bit mode. There was still a need for threads to access thread local store, and each thread needed a a pointer ... somewhere in the immediately accessible thread state (e.g, in the registers) ... to thread local store. Since Windows and Linux both used FS and GS (...
App Inventor 2 串口通信教程 - USB串口与蓝牙串口 · App Inventor 2 中文网
...自手机 App）
if (Serial.available() > 0) {
char command = Serial.read();
switch (command) {
case '1':
// 打开 LED
digitalWrite(13, HIGH);
Serial.println("LED ON");
break;
case '0':
// 关闭 LED
digitalWrite(13, LOW);
...