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Entity Attribute Value Database vs. strict Relational Model Ecommerce
...t categories with new attributes set would be generated, together with SQL scripts.
Such architecture seems to be the sweetspot in this case - flexible and performant at the same time.
The problem could be frequent use of ALTER TABLE in live environment. I'm using Postgres, so its MVCC and transac...
ssl_error_rx_record_too_long and Apache SSL [closed]
...n the money for me. It suggested changing the virtual host tag, ie, from <VirtualHost myserver.example.com:443> to <VirtualHost _default_:443>
Error code: ssl_error_rx_record_too_long
This usually means the implementation of SSL on your server is not correct. The error is usual...
How to fluently build JSON in Java?
...en Java8 is released you'll be able to do something like this:
Collection<User> users = ...;
JsonArray jsonArray = JsonBuilderFactory.buildArray(users, { u-> buildObject()
.add("userName", u.getName())
...
Update Row if it Exists Else Insert Logic with Entity Framework
...dy exists in the ObjectStateManager. The ObjectStateManager cannot track multiple objects with the same key.
– John Zumbrum
Nov 29 '12 at 21:58
1
...
Foreach loop, determine which is the last iteration of the loop
...th the last element then using LINQ will help here:
Item last = Model.Results.Last();
// do something with last
If you need to do something different with the last element then you'd need something like:
Item last = Model.Results.Last();
foreach (Item result in Model.Results)
{
// do somethi...
UnmodifiableMap (Java Collections) vs ImmutableMap (Google) [duplicate]
...tions for those who only have the reference to the unmodifiable view:
Map<String, String> realMap = new HashMap<String, String>();
realMap.put("A", "B");
Map<String, String> unmodifiableMap = Collections.unmodifiableMap(realMap);
// This is not possible: It would throw an
// Un...
【HarmonyOS】真机测试ble - HarmonyOS NEXT - 清泛IT社区，为创新赋能！
[2:01:15 PM] YAIL[254]: (begin (require <com.google.youngandroid.runtime>) (process-repl-input "P:)R:yv~...
[2:01:15 PM] → SimpleYail 执行
[2:01:15 PM] [YAIL] 解析 YAIL (244 chars)
[2:01:15 PM] [YAIL] 解析得到 1 个顶层表达式
[2:01:15 PM] [YAIL] 执行[0]: (be...
How to convert the ^M linebreak to 'normal' linebreak in a file opened in vim?
...
Command
:%s/<Ctrl-V><Ctrl-M>/\r/g
Where <Ctrl-V><Ctrl-M> means type Ctrl+V then Ctrl+M.
Explanation
:%s
substitute, % = all lines
<Ctrl-V><Ctrl-M>
^M characters (the Ctrl-V is a Vim way of writing ...
How to access property of anonymous type in C#?
...r an update for C# 4:
dynamic d = o;
object v = d.Foo;
And now another alternative in C# 6:
object v = o?.GetType().GetProperty("Foo")?.GetValue(o, null);
Note that by using ?. we cause the resulting v to be null in three different situations!
o is null, so there is no object at all
o is no...
JQuery - find a radio button by value
....val();
This will select the radio which has the value of aaa
With .filter() method:
var radio = $('input[type="radio"]').filter(function(){
return this.value === 'aaa';
}).val();
...