pcc | Portable C Compiler
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QUESTION
In Gfsh, I was able to do: create region --name=employee --type=REPLICATE --enable-statistics=true --entry-time-to-live-expiration=900
.
We have a requirement to create a Region using Java using the @EnableEntityDefinedRegions
annotation. When I use describe
in Gfsh the Regions are showing, but entity time to live expiration (TTL) is not setting by using below ways.
Any idea how to set TTL in Java?
Spring Boot 2.5.x
and spring-gemfire-starter
1.2.13.RELEASE
are used in the app.
ANSWER
Answered 2022-Mar-08 at 20:08First, Spring Boot for Apache Geode (SBDG) 1.2.x
is already EOL because Spring Boot 2.2.x
is EOL (see details on support). SBDG follows Spring Boot's support lifecycle and policies.
Second, SBDG 1.2.x
is based on Spring Boot 2.2.x
. See the Version Compatibility Matrix for further details. We will not support mismatched dependency versions. While mismatched dependency versions may work in certain cases (mileage varies depending on your use case), the version combinations not explicitly stated in the Version Compatibility Matrix will not be supported none-the-less. Also see the documentation on this matter.
Now, regarding your problem with TTL Region entry expiration policies...
SBDG auto-configuration creates an Apache Geode ClientCache
instance by default (see docs). You cannot create a PARTITION
Region using a ClientCache
instance.
If your Spring Boot application is intended to be a peer Cache
instance in an Apache Geode cluster (server-side), then you must explicitly declare your intention by overriding SBDG's auto-configuration, like so:
QUESTION
I'm a total beginner at Python and am currently running this nested for loop webscraping program to scrape for several Excel files for thousands of observations in my dataset. However, my code runs so slow in that I need to speed up this process so I can do this for 5-20 observations AT ONCE. People have suggested threading or asyncio, but I don't know how to use them or what code to write as the documentation online is extremely obtuse with no real explanation as to what Python 3.9 (Spyder) is doing during my trial-and-error process.
My code is LONG, but the main point is that I need to iterate over multiple elements i (in the first line of code) at once, but I don't know how to do so. I'm looking for an easy fix. I realize this code is very clunky, but processing power/speed is not an issue. Please only help me address the concurrency issues!
Here's my code. The very first line is the one that I need to iterate over multiple (10-20) elements in an array at once/concurrently for.
...ANSWER
Answered 2022-Feb-21 at 17:10You can try concurrent.futures
. Define the code you want to run as a function with one argument, and pass it like so:
QUESTION
I am a relative novice to R & ggplot. I am trying to plot an interaction. When I plot the interaction using SPSS - the regression lines go from the y-axis all the way to the opposite edge of the plot:
However, when I use ggplot, the regression lines only go as far as the first and last data point which makes the graph look strange
Is there any way to remedy this and make my ggplot look more like the SPSS plot?
Here is the code I am using
...ANSWER
Answered 2022-Feb-19 at 14:55geom_smooth
has a fullrange
option, which has a default value of FALSE
:
Should the fit span the full range of the plot, or just the data?
Thus, you can use:
QUESTION
I would like to know what the legal way of defining a constant struct
that has a pointer as one of it's elements.
Looking at this post (Initializer element is not constant in C) I can see the following:
6.6 Constant expressions
(7) More latitude is permitted for constant expressions in initializers. Such a constant expression shall be, or evaluate to, one of the following:
— an arithmetic constant expression,
— a null pointer constant,
— an address constant, or
— an address constant for an object type plus or minus an integer constant expression.
(8) An arithmetic constant expression shall have an arithmetic type and shall only have operands that are integer constants, floating constants, enumeration constants, character constants, and sizeof expressions. Cast operators in an arithmetic constant expression shall only convert arithmetic types to arithmetic types, except as part of an operand to a sizeof operator whose result is an integer constant.
My question is if the following is well defined according to the (intersection of the C89 and C99) standard.
The contents of test.h
:
ANSWER
Answered 2022-Jan-31 at 00:24As the question notes, an initializer may be an address constant.
C 2018 6.6 9 says “An address constant is a null pointer, a pointer to an lvalue designating an object of static storage duration, or a pointer to a function designator; it shall be created explicitly using the unary &
operator or an integer constant cast to pointer type, or implicitly by the use of an expression of array or function type…”
In const poly my_poly = {2UL, coeffs};
, coeffs
is an array of static storage duration, and it is implicitly converted to a pointer to its first element (per C 2018 6.3.2.1 3). Therefore, the result of the conversion, effectively &coeffs[0]
, is an address constant and may be used as an initializer.
QUESTION
I am new to modbus comunication, i have to read from an inverter a single value from one register using modbus protocol (i use python with pymodbus for this): From the inverter documentation i read about register documentation:
Register ADR: 31249 Description: Active power of system at PCC (W) CNT: 2 Type: S32 Format: FIX0 Access: RO
Well, i try my python script like this:
...ANSWER
Answered 2021-Nov-09 at 19:14As far as I can tell from your question you are trying to connect to an SMA inverter.
Reading the first manual I could find it's not completely clear but it seems the register you are trying to read is not a holding register but an input register (for most Modbus devices if the register number is in the 3XXXX range it usually means input register and 4XXXX is for holding registers).
The second trick is the offset: pyModbus does not account for the way registers are addressed in the protocol so you have to be aware that:
-When you are trying to read or write an input register you need to subtract 30001. For your case, that is: 31249-30001=1248
(note that in some weird devices the offset is actually 30000 so you might want to try that too).
-For holding registers the offset is obviously 40001 instead.
If the manual I pointed to above is correct for your device then you should be addressing unit 2 instead of 1 as you are doing now. If that's correct you'd have to change this line:
QUESTION
Given a small dataset as follows:
...ANSWER
Answered 2021-Aug-27 at 06:28Use np.sort
for sorting in numpy, asign back and then remove duplicates:
QUESTION
I am using the @Cacheable("MyCache") annotation along with the PCC (Pivotal Cloud Cache) provider.
Here is my configuration class
...ANSWER
Answered 2021-Jul-15 at 02:01Previously, SDG did not support annotation-based expiration configuration (i.e. using @EnableExpiration
) with @EnableCachingDefinedRegions
due to the way the infrastructure beans were created and registered in the Spring container.
However, I decided (see Issue #518) to make some enhancements to the annotation-based configuration model to enable expiration configuration using @EnableExpiration
on Regions defined with @EnableCachingDefinedRegions
.
By way of example, refer to this test case in the EnableExpirationConfigurationIntegrationTests
class of the SDG test suite. The caching/expiration configuration you are looking for is here along with the caching enabled application service class.
Since you are also using SBDG (which is good(!)), then you can simplify the configuration to:
QUESTION
I know I am repeating myself in m JS code, its not DRY, though I am not sure how to write it in a more succinct way.
In order to change the style of elements on a click event, I follow the path of creating classes that contain the changes and then remove default classes and add new classes for the element being clicked on and then remove new classes and add default classes back again when the user clicks off the element.
Everything works 100%, though I am quite certain there is a much simpler way to do this by using some kind of loop and I am also not sure if I need all the constants I am using to hold the values of the object elements before the change - maybe there is a simpler way to access the DOM for these elements? (step 3.2 below).
I have only been learning web development for a month so I don't know what I don't know.
Can you take a look and let me know if you have a simpler approach?
I have 6 divs that share classes for a column, color, and content. They all look as follows:
...ANSWER
Answered 2021-Jul-12 at 19:05I am not really sure what you are trying to achieve. However I think I can give you some general pointers to improve your code.
If you have duplicate code, put the code in a function and use function arguments if necessary.
You do not want to duplicate the structure of your HTML in your JavaScript code. If you add a new portfolio_columns
to your HTML, you have to update your JavaScript also. That's error prone and not very convenient.
A way to achieve this is to not work with IDs and getElementById()
but to work with classes and querySelectorAll()
. This function is available on document
but also on all Element
s.
QUESTION
I am trying to remove a number of properties from an object of objects I've found a lot of questions on stack overflow about doing this for array but I can't seem to figure out a clean way of going about doing this for my purposes.
My data looks like this:
...ANSWER
Answered 2021-Jun-28 at 21:11I'd create two lists, one of the objects you want to delete from and one of the properties you want to delete and iterate over them in a nested loop:
QUESTION
I have a reduce function that formats my data in the way i need but the only issue is the data is nested inside an array. I need to remove the outter array or just stop the reduce function from adding it in but every attempt Ive made to stop the reducer from wrapping the data in an array breaks my code. Ideally I would like my reducer to not wrap the data in an array but if thats not possible removing the array i need from inside the reducer cleanly seems like the only solution:
my data looks like this:
...ANSWER
Answered 2021-Jun-04 at 18:06Try changing the final reduce argument from []
to {}
and I think you'll have better luck.
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