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Express next function, what is it really for?
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next() with no arguments says "just kidding, I don't actual want to handle this". It goes back in and tries to find the next route that would match.
This is useful, say if you want to have some kind of page manager with url slugs, as well as lots of other thing...
How to insert a text at the beginning of a file?
...dd a line at the beginning of a file, you need to add \n at the end of the string in the best solution above.
The best solution will add the string, but with the string, it will not add a line at the end of a file.
sed -i '1s/^/your text\n/' file
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Getting list of parameter names inside python function [duplicate]
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@BrunoBronosky why not just use f-strings? f'found {thing} in {place}, took {action}, resulting in {result}'
– speedstyle
Jul 20 '19 at 20:05
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How to solve Permission denied (publickey) error when using Git?
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Next you need to copy this to your clipboard.
On OS X run: cat id_rsa.pub | pbcopy
On Linux run: cat id_rsa.pub | xclip
On Windows (via Cygwin/Git Bash) run: cat id_rsa.pub | clip
Add your key to your account via the website.
Finally setup your .gitconfig.
git config ...
Converting Select results into Insert script - SQL Server [closed]
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+1 @marc_s I did a lot work generating such insert scripts unsing T-SQL generator scripts and now you tell me that there is a tool.
– bernd_k
Dec 24 '10 at 13:22
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Scroll to bottom of div?
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Here's what I use on my site:
var objDiv = document.getElementById("your_div");
objDiv.scrollTop = objDiv.scrollHeight;
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Are nested transactions allowed in MySQL?
...noDB supports SAVEPOINTS.
You can do the following:
CREATE TABLE t_test (id INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
START TRANSACTION;
INSERT
INTO t_test
VALUES (1);
SELECT *
FROM t_test;
id
---
1
SAVEPOINT tran2;
INSERT
INTO t_test
VALUES (2);
SELECT *
FROM t_test;
id...
Adding attribute in jQuery
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You can add attributes using attr like so:
$('#someid').attr('name', 'value');
However, for DOM properties like checked, disabled and readonly, the proper way to do this (as of JQuery 1.6) is to use prop.
$('#someid').prop('disabled', true);
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c++ Timer使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...均提供实例参考。窗口应用程序使用Timer：
#define TIMER_ID 1000 //定时器ID，可任意。触发后回调函数中用于区别不同的定时器以执行不同的任务
SetTimer(TIMER_ID, 1000 , NULL); //启动定时器，1秒后触发
KillTimer(TIMER_ID); //取消定时器
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解决：ORA-00054:资源正忙,要求指定NOWAIT - 数据库(内核) - 清泛网 - 专注...
...出所有被锁的对象，定位出哪个回话占用
select l.session_id,o.owner,o.object_name from v$locked_object l,dba_objects o where l.object_id=o.object_id
结果：
session_id owner object_name
158 SA TEST_1
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对比想要创建的索引，定位哪些会话需要被删除
2：...