大约有 15,000 项符合查询结果（耗时：0.0323秒） [XML]
Vim: insert the same characters across multiple lines
...d rather than a lowercase i, because the lowercase i is interpreted as the start of a text object, which is rather useful on its own, e.g. for selecting inside a tag block (it):
share
|
improve th...
Deleting queues in RabbitMQ
...y persistent messages
rabbitmqctl stop_app
rabbitmqctl reset
rabbitmqctl start_app
The rabbitmq documentation says that the reset command:
Returns a RabbitMQ node to its virgin state.
Removes the node from any cluster it belongs to, removes all data from
the management database, such...
Hand Coded GUI Versus Qt Designer GUI [closed]
...
Our experience with Designer started in Qt3.
Qt3
At that point, Designer was useful mainly to generate code that you would then compile into your application. We started using for that purpose but with all generated code, once you edit it, you can no l...
/bin/sh: pushd: not found
...ocesses. (A hypothetical pushd command might do the chdir(2) call and then start a new shell, but ... it wouldn't be very usable.) pushd is a shell builtin, just like cd.
So, either change your script to start with #!/bin/bash or store the current working directory in a variable, do your work, then...
Rails: FATAL - Peer authentication failed for user (PG::Error)
...plication_production
pool: 5
username: my_application
password:
4) Start the postgres shell with this command:
$ psql
4a) You may get this error if your current user (as in your computer user) doesn't have a corresponding administration postgres role.
psql: FATAL: role "your_username" d...
What does 'public static void' mean in Java?
...
the java runtime environment must call the main method to start your application. it couldn't do that when it were private.
– Philipp
Sep 4 '12 at 20:44
add a...
How to use timeit module
...mpare two blocks of code / functions quickly you could do:
import timeit
start_time = timeit.default_timer()
func1()
print(timeit.default_timer() - start_time)
start_time = timeit.default_timer()
func2()
print(timeit.default_timer() - start_time)
...
Inserting image into IPython notebook markdown
I am starting to depend heavily on the IPython notebook app to develop and document algorithms. It is awesome; but there is something that seems like it should be possible, but I can't figure out how to do it:
...
MVC 4 @Scripts “does not exist”
...ce the release of MVC 4 System.Web.Optimization is now obsolete. If you're starting with a blank solution you will need to install the following nuget package:
Install-Package Microsoft.AspNet.Web.Optimization
You will still need to reference System.Web.Optimization in your web.config files. For ...
How do you detect/avoid Memory leaks in your (Unmanaged) code? [closed]
...s some useful functions for detecting and debugging memory leaks.
I would start with this article:
https://msdn.microsoft.com/en-us/library/x98tx3cf(v=vs.140).aspx
Here is the quick summary of those articles. First, include these headers:
#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#incl...