persist | wrapper around PStore to make persisting Ruby objects | Key Value Database library
kandi X-RAY | persist Summary
kandi X-RAY | persist Summary
The Persist gem makes it really, really simple to persist Ruby objects to disk. Persist uses Ruby's PStore class to serialize Ruby objects with Marshal and transactionally save them for retrieval later.
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QUESTION
So I recently updated my Android Studio to "Android Studio Bumblebee | 2021.1.1 Patch 1" and now I have this weird bug where my emulator would disappear randomly. It works fine for sometime but would randomly disappear. In the device manager it shows that emulator is running but in the emulator tab it shows "No emulator is currently running" As you can see from the screenshot attached green dot in the device manager that means "Emulator is running", whereas it isn't. The only way to get back emulator is to "cold reboot it" from the device manager. Anyone else facing the same bug? Any suggestions as to where to look trying to debug this. I've tried deleting and installing emulator again but the issue persisted.
...ANSWER
Answered 2022-Feb-10 at 04:01Had exactly the same issue on BumbleBee and the only way that I found to go about this, was to use a detached emulator in a separate window.
To run the emulator in a separate window go to File > Settings > Tools > Emulator (On Mac -> *Android Studio > Preferences > Tools > Emulator ) and deselect Launch in a tool window
.
This way the emulator will always be there.
QUESTION
I was programming a game using Python and a sound effect needed to be played, so I used the playsound module:
...ANSWER
Answered 2021-Sep-05 at 07:20I don't think PlaySound supports .wav files. Try converting Typing.wav
into an mp3 file. Then change
QUESTION
Suppose that I have implemented two Python types using the C extension API and that the types are identical (same data layouts/C struct
) with the exception of their names and a few methods. Assuming that all methods respect the data layout, can you safely change the type of an object from one of these types into the other in a C function?
Notably, as of Python 3.9, there appears to be a function Py_SET_TYPE
, but the documentation is not clear as to whether/when this is safe to do. I'm interested in knowing both how to use this function safely and whether types can be safely changed prior to version 3.9.
I'm writing a Python C extension to implement a Persistent Hash Array Mapped Trie (PHAMT); in case it's useful, the source code is here (as of writing, it is at this commit). A feature I would like to add is the ability to create a Transient Hash Array Mapped Trie (THAMT) from a PHAMT. THAMTs can be created from PHAMTs in O(1)
time and can be mutated in-place efficiently. Critically, THAMTs have the exact same underlying C data-structure as PHAMTs—the only real difference between a PHAMT and a THAMT is a few methods encapsulated by their Python types. This common structure allows one to very efficiently turn a THAMT back into a PHAMT once one has finished performing a set of edits. (This pattern typically reduces the number of memory allocations when performing a large number of updates to a PHAMT).
A very convenient way to implement the conversion from THAMT to PHAMT would be to simply change the type pointers of the THAMT objects from the THAMT type to the PHAMT type. I am confident that I can write code that safely navigates this change, but I can imagine that doing so might, for example, break the Python garbage collector.
(To be clear: the motivation is just context as to how the question arose. I'm not looking for help implementing the structures described in the Motivation, I'm looking for an answer to the Question, above.)
...ANSWER
Answered 2022-Mar-02 at 01:13According to the language reference, chapter 3 "Data model" (see here):
An object’s type determines the operations that the object supports (e.g., “does it have a length?”) and also defines the possible values for objects of that type. The type() function returns an object’s type (which is an object itself). Like its identity, an object’s type is also unchangeable.[1]
which, to my mind states that the type must never change, and changing it would be illegal as it would break the language specification. The footnote however states that
[1] It is possible in some cases to change an object’s type, under certain controlled conditions. It generally isn’t a good idea though, since it can lead to some very strange behaviour if it is handled incorrectly.
I don't know of any method to change the type of an object from within python itself, so the "possible" may indeed refer to the CPython function.
As far as I can see a PyObject
is defined internally as a
QUESTION
It was working fine before I have done nothing, no packages update, no gradle update no nothing just created new build and this error occurs. but for some team members the error occur after gradle sync.
The issue is that build is generating successfully without any error but when opens the app it suddenly gets crash (in both debug and release mode)
Error
...ANSWER
Answered 2022-Feb-25 at 23:22We have fixed the issue by replacing
QUESTION
It was a project that used to work well in the past, but after updating, the following errors appear.
...ANSWER
Answered 2021-Sep-17 at 11:03Add mavenCentral() in Build Script
QUESTION
I'm upgrading from JDK 8 to JDK 17 and I'm trying to compile with mvn clean install -X -DskipTests
and there's no information about the error.
Btw, I'm updating the dependencies and after that I compile to see if has errors. I need to update some dependencies such as Spring, Hibernate etc. I already updated Lombok.
I added the -X or -e option but I got the same result.
What can I do to get more information about the error? The log shows that it was loading hibernate-jpa-2.1-api before failed... so that means the problem is in this dependency?
...ANSWER
Answered 2021-Oct-19 at 20:28This failure is likely due to an issue between java 17 and older lombok versions. Building with java 17.0.1, lombok 1.18.20 and maven 3.8.1 caused a vague "Compilation failure" for me as well. I upgraded to maven 3.8.3 which also failed but provided this detail on the failure:
java.lang.NullPointerException: Cannot read field "bindingsWhenTrue" because "currentBindings" is null
Searching for this failure message I found this issue on stackoverflow leading me to a bug in lombok. I upgraded to lombok 1.18.22 and that fixed the compilation failure for a successful build.
QUESTION
I have an odd problem, where I am struggling to understand the nature of "static context" in Java, despite the numerous SO questions regarding the topic.
TL;DR:
I have a design flaw, where ...
This works:
...ANSWER
Answered 2022-Jan-26 at 17:11One way to solve the issue is by parameterizing the ParentDTO Class with its own children.
QUESTION
I have a Python 3 application running on CentOS Linux 7.7 executing SSH commands against remote hosts. It works properly but today I encountered an odd error executing a command against a "new" remote server (server based on RHEL 6.10):
encountered RSA key, expected OPENSSH key
Executing the same command from the system shell (using the same private key of course) works perfectly fine.
On the remote server I discovered in /var/log/secure
that when SSH connection and commands are issued from the source server with Python (using Paramiko) sshd complains about unsupported public key algorithm:
userauth_pubkey: unsupported public key algorithm: rsa-sha2-512
Note that target servers with higher RHEL/CentOS like 7.x don't encounter the issue.
It seems like Paramiko picks/offers the wrong algorithm when negotiating with the remote server when on the contrary SSH shell performs the negotiation properly in the context of this "old" target server. How to get the Python program to work as expected?
Python code
...ANSWER
Answered 2022-Jan-13 at 14:49Imo, it's a bug in Paramiko. It does not handle correctly absence of server-sig-algs
extension on the server side.
Try disabling rsa-sha2-*
on Paramiko side altogether:
QUESTION
I am setting up the base for an app with MUI v5 and TypeScript. I want to extend the MUI theme with some custom properties which add to the existing default properties.
My theme.ts config looks like that:
...ANSWER
Answered 2021-Nov-17 at 14:12To update Typography
variant in Typescript, use the following code:
QUESTION
I just downloaded activiti-app from github.com/Activiti/Activiti/releases/download/activiti-6.0.0/…
and deployed in tomcat9, but I have this errors when init the app:
ANSWER
Answered 2021-Dec-16 at 09:41Your title says you are using Java 9. With Activiti 6 you will have to use JDK 1.8 (Java 8).
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