大约有 6,600 项符合查询结果（耗时：0.0246秒） [XML]
How to get a list of column names on Sqlite3 database?
...
PRAGMA table_info(table_name);
will get you a list of all the column names.
share
|
improve this answer
|
foll...
Extract traceback info from an exception object
...dit for this part of the answer should go to Vyctor, who first posted this information. I'm including it here only because this answer is stuck at the top, and Python 3 is becoming more common.
In Python 2
It's annoyingly complex. The trouble with tracebacks is that they have references to stack f...
地图组件（高德地图） · App Inventor 2 中文网
...ption（描述）
draggable 转换为 Draggable（可拖动）
infobox 转换为 EnableInfobox（启用信息框）
fill 转换为 FillColor（填充色）
fill-opacity 转换为 FillOpacity（填充透明度）
image 转换为 ImageAsset（图像素材）
stroke ...
Manually raising (throwing) an exception in Python
...ou insist.
You can preserve the stacktrace (and error value) with sys.exc_info(), but this is way more error prone and has compatibility problems between Python 2 and 3, prefer to use a bare raise to re-raise.
To explain - the sys.exc_info() returns the type, value, and traceback.
type, value, ...
Why are the Level.FINE logging messages not showing?
...s the former), which defaults to publishing log records of the level Level.INFO. You will have to configure this handler, to publish log records of level Level.FINER and higher, for the desired outcome.
I would recommend reading the Java Logging Overview guide, in order to understand the underlying...
phpcms v9内容页/下载页更新时间（updatetime）为空的解决方法 - 更多技术 ...
... define('INDEX_HTML',true);
$catid = $_POST['info']['catid'] = intval($_POST['info']['catid']);
if(trim($_POST['info']['title'])=='') showmessage(L('title_is_empty'));
$category = $this->categorys[$catid];
...
How to watch for a route change in AngularJS?
...
i am learning angular. so i need to know what kind of info we can get from event, next, current argument ?
– Monojit Sarkar
May 10 '17 at 20:27
add a comm...
How to get the build/version number of your Android application?
...
Use:
try {
PackageInfo pInfo = context.getPackageManager().getPackageInfo(getPackageName(), 0);
String version = pInfo.versionName;
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
And you can get the version...
log4net hierarchy and logging levels
...
Number of levels recorded for each setting level:
ALL DEBUG INFO WARN ERROR FATAL OFF
•All
•DEBUG •DEBUG
•INFO •INFO •INFO
•WARN •WARN •WARN •WARN
•ERROR •ERROR •ERROR ...
How to add extra info to copied web text
...Older post - before the 2020 update]
There are two main ways to add extra info to copied web text.
1. Manipulating the selection
The idea is to watch for the copy event, then append a hidden container with our extra info to the dom, and extend the selection to it.
This method is adapted from this...