大约有 41,000 项符合查询结果(耗时:0.0431秒) [XML]
Output data from all columns in a dataframe in pandas [duplicate]
...idth of your console.
Alternatively, you can change the console width (in chars) from the default of 80 using e.g:
pandas.set_option('display.width', 200)
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CHECK constraint in MySQL is not working
...GER `test_before_insert` BEFORE INSERT ON `Test`
FOR EACH ROW
BEGIN
IF CHAR_LENGTH( NEW.ID ) < 4 THEN
SIGNAL SQLSTATE '12345'
SET MESSAGE_TEXT := 'check constraint on Test.ID failed';
END IF;
END$$
DELIMITER ;
Prior to MySQL 5.5 you had to cause an error, e.g. ca...
Getting command-line password input in Python
...s function requires a proper terminal, so it can turn off echoing of typed characters – see “GetPassWarning: Can not control echo on the terminal” when running from IDLE for further details.
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Remove carriage return in Unix
...many shells on many terminals, ctrl-V ctrl-M will produce a literal ctrl-M character).
– tripleee
Aug 25 '14 at 10:55
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Can lambda functions be templated?
... std::cout << identity(t) << std::endl;
}
int main(int argc, char *argv[]) {
std::string s("My string");
boring_template_fn(s);
boring_template_fn(1024);
boring_template_fn(true);
}
Prints:
My string
1024
1
I've found this technique is helps when working with templ...
Best way to test if a row exists in a MySQL table
...
You could also try EXISTS:
SELECT EXISTS(SELECT * FROM table1 WHERE ...)
and per the documentation, you can SELECT anything.
Traditionally, an EXISTS subquery starts with SELECT *, but it could
begin with SELECT 5 or SELECT column1 or anything ...
Standard deviation of a list
... would expect. I couldn't edit the post as edits need to modify at least 6 chars...
– mknaf
Jan 6 '17 at 16:00
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Android: Coloring part of a string using TextView.setText()?
...eSpan(android.graphics.Typeface.BOLD);
// Set the text color for first 4 characters
sb.setSpan(fcs, 0, 4, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
// make them also bold
sb.setSpan(bss, 0, 4, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
yourTextView.setText(sb);
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How to pass password to scp?
...odedfos, yes you need to use single quotes because some password generated chars can have a special interpretation in double quoted string interpolation
– TerryE
Jul 19 '14 at 12:50
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In Bash, how do I add a string after each line in a file?
... @shuhalo According to gnu sed documentation $ also acts as a special character only at the end of the regular expression. So $ regexp grabs the end of each line and s/$/appendix/ substitues the end of a line with a given string. This is my understanding.
– Azatik1000
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