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How to drop a table if it exists?
...MS servers provide, at least, basic INFORMATION_SCHEMA support, including: MySQL, Postgres, Oracle, IBM DB2, and Microsoft SQL Server 7.0 (and greater).
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How to add facebook share button on my website?
...ok at the following code
FB Javascript SDK initialization
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
FB.init({appId: 'YOUR APP ID', status: true, cookie: true,
xfbml: true});
};
(function() {
var e = document.createElement('script'); e.async = true;
e.src...
C# Ignore certificate errors?
...
The reason it's failing is not because it isn't signed but because the root certificate isn't trusted by your client. Rather than switch off SSL validation, an alternative approach would be to add the root CA cert to the list of CAs your app trusts.
This is the root CA cert that your app curren...
EF Code First foreign key without navigation property
...am practicing DDD and I want Parent and Child to be two separate aggregate roots. I want them to be able to talk to each other via foreign key not through infrastructure-specific Entity Framework navigation properties.
All you have to do is to configure the relationship on one side using HasOne and...
In node.JS how can I get the path of a module I have loaded via require that is *not* mine (i.e. in
...in() calls), then resolve the package.json — which must always be in the root of the project — and pass to path.dirname():
let packagePath = path.dirname(require.resolve("moduleName/package.json"));
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In bash, how does one clear the current input?
...o that, use Ctrl-U. Ctrl-C is not that bad in bash, but if you have e.g. a mysql client prompt, Ctrl-C will disconnect from the server which is really annoying.
– Christian
Nov 25 '13 at 10:54
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Converting Epoch time into the datetime
...-%m-%d %H:%M:%S", time.gmtime(1347517119))
'2012-09-12 23:18:39'
Also in MySQL, you can FROM_UNIXTIME like:
INSERT INTO tblname VALUES (FROM_UNIXTIME(1347517119))
For your 2nd question, it is probably because getbbb_class.end_time is a string. You can convert it to numeric like: float(getbbb_c...
Why always ./configure; make; make install; as 3 separate steps?
...l. That means then you have to use actually sudo make install because only root can copy files to /usr and /usr/local.
Now you see that each step is a pre-requirement for next step. Each step is a preparation to make things work in a problemless flow. Distros use this metaphor to build packages (...
App Inventor 2 UrsAI2ActionBar 拓展 - 溢出菜单，...菜单 · App Inventor 2 中文网
...得与其他Android应用一致，
这样用户可以快速直观地理解如何使用该应用。它是一种特殊类型的工具栏，位于每个屏幕的顶部，用于品牌标识、导航、搜索和操作。此拓展使得
在App Inventor应用中实现 ActionBar 成为可能。
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Swift native base class or NSObject
...ge reference, there is no requirement for classes to subclass any standard root class, so you can include or omit a superclass as needed.
Note that omitting a superclass from the class declaration, doesn't assign a implicit base superclass of any kind. It defines a base class, which will effectivel...