surrogate | Framework to aid in handrolling mock/spy objects | Mock library
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kandi X-RAY | surrogate Summary
Framework to aid in handrolling mock/spy objects.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of surrogate
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QUESTION
I want to create a small wrapper to reprex that passes input code to reprex::reprex().
As reprex uses substitute() on its x argument, I need to somehow escape it.
A minimal working example is this, where internal_foo() acts as a surrogate for reprex().
The expected result is that both the call to internal_foo(...) as well as to the wrapper(...) return the identical output.
ANSWER
Answered 2022-Apr-08 at 08:22You could do
QUESTION
Maybe someone can help me out because I have a really tricky situation with Bluetooth LE using WinRT on Windows 10 (like supposed here: Bluetooth Low Energy in .Net (C#)).
I need BLE within a Win32 classic desktop application.
Our code is running in a 32 Bit frame application using the .NET runtime (v4.0.30319, .NET Framework 4.6.2). I was able to manage all the other issues (strong naming some NuGet assemblies (Shiny.BluetoothLE), running BluetoothAdapter.GetRadioAsync() in a 64 Bit COM surrogate DLL when running on 64 Bit Windows) but now I am totally stuck with this and here’s where:
The problem occurrs when executing var result = await gattDeviceService.GetCharacteristicsForUuidAsync(uuid, BluetoothCacheMode.Cached); see here https://docs.microsoft.com/de-de/uwp/api/windows.devices.bluetooth.genericattributeprofile.gattdeviceservice.getcharacteristicsforuuidasync?view=winrt-20348.
When getting the read characteristics, the result.Status is GattCommunicationStatus.Success and the result contains the desired characteristic.
But of course I also need to get the write characteristic and I am ALWAYS getting GattCommunicationStatus.AccessDenied!
Because of that the result contains NO characteristic.
Has anybody a clue why is that? I really need help here because I am kinda lost right now…
I also tried to set AccessPermission via registry like supposed here but no luck at all…
PS: I use Windows 10 SDK Kit Build 20348 and like stated above it is a C# .NET Framework 4.6.2 project and all our assemblies are strong named because of using GAC. If I am missing anything don’t hesitate to contact me.
...ANSWER
Answered 2022-Mar-26 at 15:26For anyone who stumbles over the same stupid issue...Here's the solution:
On Windows, using .NET Framework 4.6.1+ and the WinRT libraries inside a Non-UWP application, you can only call ONCE for getting the characteristics, no matter if you call for all at once via gattDeviceService.GetCharacteristicsAsync(BluetoothCacheMode.Uncached) or for a specific one via gattDeviceService.GetCharacteristicsForUuidAsync(uuid, BluetoothCacheMode.Cached).
Any subsequent calls will fail with GattCommunicationStatus.AccessDenied...
So my solution now is to retrieve all characteristics at once and filter them locally.
That did the trick! Anyways, this is so stupid...It wasted a lot of my time now!
As it seems, I also do not need to set any AccessPermission via registry.
PS: I will call out to you, if I stumble over another tricky situation, just to let you guyz know.
QUESTION
I'm learning about policy gradients and I'm having hard time understanding how does the gradient passes through a random operation. From here: It is not possible to directly backpropagate through random samples. However, there are two main methods for creating surrogate functions that can be backpropagated through.
They have an example of the score function:
ANSWER
Answered 2021-Nov-30 at 05:48It is indeed true that sampling is not a differentiable operation per se. However, there exist two (broad) ways to mitigate this - [1] The REINFORCE way and [2] The reparameterization way. Since your example is related to [1], I will stick my answer to REINFORCE.
What REINFORCE does is it entirely gets rid of sampling operation in the computation graph. However, the sampling operation remains outside the graph. So, your statement
.. how does the gradient passes through a random operation ..
isn't correct. It does not pass through any random operation. Let's see your example
QUESTION
I've written some tests in which I use org.springframework.core.io.ClassPathResource to get file that will be sent to API. One to the requirements were to support unicode characters in the filename so I've loaded file containing random mix of unicode characters and it failed to decode URI. After some diagnostics it seems like this cute boy of character "🐱" (cat emoji, U+1F431) is breaking it. I've encoded it using unicode escape ("\u") for Java literals in case something is wrong with IDE encoding/view. But nothing changed. So I've created the demo using Spring Boot initializr in case some packages had any effect and began debugging. From testing it seems that characters that can be encoded using single "\u" escape sequence work just fine (GAMMA did work) but those that need to use surrogate pairs don't eg. 🐱 being "\uD83D\uDC31".
URL encoded emoji/filename in question looks like this %ed%a0%bd%ed%b0%b1 comes from sun.net.www.ParseUtil.encodePath(String path, boolean flag), while error is thrown in the same class but decode(String path) method. I couldn't use ParseUtil myself directly because it wasn't accessible even though it's public. Can anyone explain what is going on here? Is it just a bug in ParseUtils/Java or I'm missing something?
I'm using Java 11 zulu on Windows 10.
Demo that I used:
...ANSWER
Answered 2022-Jan-29 at 13:10This is definitely a bug in Java. It is still present in Java 17. It has nothing to do with Spring; the same bug will occur if I only use URLConnection.getLastModified(). I cannot find anything about it in the Java Bug Database (yet). See Java bug 8280911.
The workaround is to create a base URL, then create a resource URL relative to that one:
QUESTION
I have loaded CSV file into staging area. Now I want to shift this file to temporary table. For that I created 3 different schemas, ie STG ( for staging area ), TMP ( for temporary area ) and TGT ( for target area or datawarehouse). This is staging table on STG schema.
...ANSWER
Answered 2022-Jan-22 at 08:46the final merge is missing a few things.
- the
INTOafterMERGE - I also fully qualified the table name (maybe not needed)
- you use the alias
PDTC&PDSCit they areTC&SC - The
Nbeing inserted inRCD_CLOSE_FLG, is a char, so it needs to be wrapped in single quotes'N'
QUESTION
I am working on a use case where I need to implement a surrogate key. I have a column ID that should auto-increment by 1 but when I use merge it skips the 2 to 4 sequence.
...ANSWER
Answered 2022-Jan-12 at 11:55It's already answered here:
MERGE command results in gaps in sequence numbers
Per the Snowflake documentation, Snowflake does not guarantee there will be no gaps in sequences.
https://docs.snowflake.net/manuals/user-guide/querying-sequences.html.
I can say that Snowflake development team is working on improving sequences for MERGE statements.
QUESTION
Given a df as shown below, and assume the value under column lapse is unique and range from 0 to 18. However, some of the values is not available within this range. For this example, the value 0,16 and 18 is missing.
ANSWER
Answered 2021-Dec-16 at 11:45You can merge:
QUESTION
I have three tables with 10M,1.2M and 7M (domain,company and tech). I left join company and tech tables with domain on id column. id column is btree indexed on all three tables.I select 1000 rows from this based on filter (a surrogate key column) which is also btree indexed.
...ANSWER
Answered 2021-Dec-15 at 04:01Running ANALYZE on all the tables fixed the issues. Attaching the execution plan
QUESTION
I'm trying to convert innerHTML with special characters into their original &#...; entity values but can't seem to get it working for unicode values. Where am I going wrong?
The code is trying to take "Orig" - encode it and place it into "Copy"....
Orig: 1:🙂__2:𝌆__3:ß__4:Ü__5:X__6:Y__7:팆__8:Z__9:⚠️__10:⚠️__11:⚠__12:🙂
Copy: 1:🙂�__2:𝌆�__3:ß__4:Ü__5:X__6:Y__7:팆__8:Z__9:⚠️__10:⚠️__11:⚠__12:🙂�
... but obviously the dreaded black diamonds are appearing!
...ANSWER
Answered 2021-Oct-16 at 01:41Javascript strings are UTF-16. A character in the surrogate range takes up two 16-bit words. The length property of a string is the count of the number of 16-bit words. Thus "🙂".length will return 2.
codePointAt(i) is not the ith character, but the ith 16-bit word. Hence, a surrogate character will appear over two consecutive codePointAt invocations. From the specs, if "🙂".toString(0) is the high surrogate, the function will return the code point value, ie 128578, but "🙂".toString(1) will return only the lower surrogate 56898, that black diamond.
Thus you need to skip one position if codePointAt returns a high surrogate.
Following the example in the specs, instead of iterating through each 16-bit word in the string, use a method that loops through each character. for let (char in aString) {} does just that.
QUESTION
I am estimating a simple lmtree model using partykit library on R.
In this estimation I have a dependent variable y, an explanatory variable x, and a set of partitioning variables z.
Some of my partitioning variables have a high quantity of missing values, and I noticed that the final estimated model sample size is net of all the missing values in those few categories. This implies that, as far as at least one of the partitioning variables have a missing value in my data frame, the entire row is removed from the estimation and I lose the information provided by all the rest of non-missing partitioning variables.
To solve this problem in more traditional conditional inference trees estimations is used the surrogate splitting (for example, with ctree_control function from partykit you can select the maxsurrogate performed in the ctree estimation).
Is it possible to perform surrogate splitting also in lmtree (model-based recursive partitioning)?
ANSWER
Answered 2021-Oct-11 at 22:56At the moment the partykit implementation of mob (and hence lmtree and glmtree) does not provide surrogate splits yet.
We are working on a new reimplementation where both ctree and mob can be used with surrogate variables and both can be used in the background for lmtree and glmtree etc.
For now the best solution when you need model-based recursive partitioning with surrogate splits is to use ctree with a custom model-based ytrafo function. This will use the CTree algorithm in the background (rather than MOB) but these often yield rather similar results. From an applied perspective the more important difference is that lmtree provides various convenience features, especially for plot and predict, that ctree does not have.
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Install surrogate
On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.
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