大约有 15,500 项符合查询结果（耗时：0.0239秒） [XML]
Bash: Syntax error: redirection unexpected
...t in a variable. then use heredoc. for example:
nc -l -p 80 <<< "tested like a charm";
can be written like:
nc -l -p 80 <<EOF
tested like a charm
EOF
and like this (this is what you want):
text="tested like a charm"
nc -l -p 80 <<EOF
$text
EOF
Practical example in busyb...
Copy values from one column to another in the same table
...
Short answer for the code in question is:
UPDATE `table` SET test=number
Here table is the table name and it's surrounded by grave accent (aka back-ticks `) as this is MySQL convention to escape keywords (and TABLE is a keyword in that case).
BEWARE, that this is pretty dangerous qu...
Check whether a path is valid in Python without creating a file at the path's target
I have a path (including directory and file name).
I need to test if the file-name is a valid, e.g. if the file-system will allow me to create a file with such a name.
The file-name has some unicode characters in it.
...
How do you avoid over-populating the PATH Environment Variable in Windows?
...y would be expanded prior to being stored. This may be true and I have not tested for it. Another option though is to use 8dot3 forms for longer directory names, for example C:\Program Files is typically equivalent to C:\PROGRA~1. You can use dir /x to see the shorter names.
EDIT 3: This simple tes...
Enabling WiFi on Android Emulator
...
I want to test VNC server on emulator and vnc server app requires Wifi or USB to get connect to network? then what is the best solution ?
– mfq
Sep 12 '13 at 14:18
...
Regular expression to match any character being repeated more than 10 times
...
The regex you need is /(.)\1{9,}/.
Test:
#!perl
use warnings;
use strict;
my $regex = qr/(.)\1{9,}/;
print "NO" if "abcdefghijklmno" =~ $regex;
print "YES" if "------------------------" =~ $regex;
print "YES" if "========================" =~ $regex;
Here th...
The tilde operator in Python
...
This is minor usage is tilde...
def split_train_test_by_id(data, test_ratio, id_column):
ids = data[id_column]
in_test_set = ids.apply(lambda id_: test_set_check(id_, test_ratio))
return data.loc[~in_test_set], data.loc[in_test_set]
the code above is from "H...
How to run Rake tasks from within Rake tasks?
...r output goes into different directories.
Say your project just compiles a test.c file to out/debug/test.out and out/release/test.out with gcc you could setup your project like this:
WAYS = ['debug', 'release']
FLAGS = {}
FLAGS['debug'] = '-g'
FLAGS['release'] = '-O'
def out_dir(way)
File.join('o...
Can you make just part of a regex case-insensitive?
...hole regular expressions. All options are off by default.
You can quickly test how the regex flavor you're using handles mode modifiers. The regex (?i)te(?-i)st should match test and TEst, but not teST or TEST.
Source
shar...
SonarQube Exclude a directory
...
Try something like this:
sonar.exclusions=src/java/test/**
share
|
improve this answer
|
follow
|
...