大约有 40,000 项符合查询结果（耗时：0.0611秒） [XML]
How to convert Set to Array?
... values in an array and then converting back to an Array, try using this:
_.uniq([])
This relies on using underscore or lo-dash.
share
|
improve this answer
|
follow
...
MySQL “NOT IN” query
...on%';
+-------------------------+------------------------------+
| Variable_name | Value |
+-------------------------+------------------------------+
| innodb_version | 1.1.8 |
| protocol_version | 10 |...
Biggest GWT Pitfalls? [closed]
... into your .gwt.xml file:
<set-property name="user.agent" value="gecko1_8" />
Where gecko1_8 is Firefox 2+, ie6 is IE, etc.
Problem: Hosted mode is very slow (on OS X at least) and does not come close to matching the 'live' changes you get when you edit things like JSPs or Rails pages an...
How to execute a MySQL command from a shell script?
...l script like so:
mysql -p=password -u "root" -Bse "CREATE DATABASE \`${1}_database\`;
CREATE USER '$1'@'%' IDENTIFIED BY '$2';
GRANT ALL PRIVILEGES ON `${1}_database`.* TO '$1'@'%' WITH GRANT OPTION;"
Of course, generating SQL through concatenated user input (passed arguments) shouldn't be done ...
Efficiently test if a port is open on Linux?
...t recent distros ship with: Fedora, Centos, etc. (nmap-ncat-6.01-9.fc18.x86_64)
– Zack
Dec 20 '15 at 14:13
9
...
How to format a number as percentage in R?
...s pointed out by @DzimitryM, percent() has been "retired" in favor of label_percent(), which is a synonym for the old percent_format() function.
label_percent() returns a function, so to use it, you need an extra pair of parentheses.
library(scales)
x <- c(-1, 0, 0.1, 0.555555, 1, 100)
label_pe...
Convert decimal to hexadecimal in UNIX shell script
...ilter a whole file of integers, one per line:
( echo "obase=16" ; cat file_of_integers ) | bc
share
|
improve this answer
|
follow
|
...
Most lightweight way to create a random string and a random hexadecimal number
...xrange(30))", "import random")
>>> t2 = timeit.Timer("binascii.b2a_hex(os.urandom(15))", "import os, binascii")
>>> t3 = timeit.Timer("'%030x' % random.randrange(16**30)", "import random")
>>> for t in t1, t2, t3:
... t.timeit()
...
28.165037870407104
9.02927398681640...
Difference between map and collect in Ruby?
...
There's no difference, in fact map is implemented in C as rb_ary_collect and enum_collect (eg. there is a difference between map on an array and on any other enum, but no difference between map and collect).
Why do both map and collect exist in Ruby? The map function has many namin...
Using ConfigurationManager to load config from an arbitrary location
... to attach configuration file to dll.
AppDomain.CurrentDomain.SetData("APP_CONFIG_FILE", <Full_Path_To_The_Configuration_File>);
Example:
AppDomain.CurrentDomain.SetData("APP_CONFIG_FILE", @"C:\Shared\app.config");
More details may be found at this blog.
Additionally, this other answer...