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How to ignore a property in class if null, using json.net
...y("property_name", NullValueHandling=NullValueHandling.Ignore)]
// or for all properties in a class
[JsonObject(ItemNullValueHandling = NullValueHandling.Ignore)]
As seen in this online doc.
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NoSQL - MongoDB vs CouchDB [closed]
...~2.5Gb
Text search integrated
GridFS to store big data + metadata (not actually an FS)
Data center aware
Best used: If you need dynamic queries. If you prefer to define indexes, not map/reduce functions. If you need good performance on a big DB. If you wanted CouchDB, but your data changes too muc...
ManyRelatedManager object is not iterable
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Try
matches = [val for val in Store.attribute_answers.all() if val in WishList.attribute_answers.all()]
Notice the parenthesis at the end of WishList.attribute_answers.all(). Adding the parenthesis invokes the all function to return an iterable.
If you include the parenthesi...
How can Perl's print add a newline by default?
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Perl 6 has the say function that automatically appends \n.
You can also use say in Perl 5.10 or 5.12 if you add
use feature qw(say);
to the beginning of your program. Or you can use Modern::Perl to get this and other features.
See perldoc feature for more detai...
App Inventor 2 BLE扩展源码分析 - WriteBytes vs WriteStrings 23字节硬编...
...p; 结束对于
返回 结果
// 发送时
当 按钮_发送.被点击 时
初始化局部变量 字节列表 = 字符串转字节列表(文本输入框_命令.文本)
调用 蓝牙LE1.WriteBytes(字节列表)
优点：无需修改源码，立即可...
Search all tables, all columns for a specific value SQL Server [duplicate]
I have a specific value, let's say string 'comments'. I need to find all instances of this in the database as I need to do an update on the format to change it to (*) Comments.
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Git: can I suppress listing of 'modified content'/dirty submodule entries in status, diff, etc?
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For the .gitignore file, there is a private version called exclude, located in .git/info/, which is not version handled. Is there a corresponding file for the .gitmodules file, that will let you suppress changes in the submodule only in your instance of the parent repository, w...
phpunit mock method multiple calls with different arguments
...s for different input arguments? For example, I have database layer class called DB. This class has method called "Query ( string $query )", that method takes an SQL query string on input. Can I create mock for this class (DB) and set different return values for different Query method calls that dep...
NPM doesn't install module dependencies
...ere are several open issues for this case in the npm repository:
npm install should recursively check/install dependencies https://github.com/npm/npm/issues/1341 (closed)
local private module dependencies https://github.com/npm/npm/issues/2442 (closed)
In the first one people list several workar...
How do I search an SQL Server database for a string?
...he first result it finds and nothing else. Is there a way for it to return all instances of the string in the database?
– qroberts
Jan 21 '16 at 19:23
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