hcd | hc full node implementation | Blockchain library
kandi X-RAY | hcd Summary
kandi X-RAY | hcd Summary
hcd is a Hc full node implementation written in Go (golang). This acts as a chain daemon for the Hc cryptocurrency. hcd maintains the entire past transactional ledger of Hc and allows relaying of quantum resistant transactions to other Hc nodes across the world. Note: To send or receive funds and join Proof-of-Stake mining, you will also need [hcwallet] HC is forked from [Decred] and [btcd] which are full node implementations written in Go. Both projects are ongoing and under active development. Since hcd is synced and will merge with upstream commits from hcd and btcd, it will get the benefit of both hcd and btcd’s ongoing upgrades to staking, voting, peer and connection handling, database optimization and other blockchain related technology improvements. Advances made by hcd can also be pulled back upstream to hcd and btcd including quantum resistant signature schemes and more.
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Top functions reviewed by kandi - BETA
- NewBlockTemplate creates a new block template for mining .
- loadConfig returns the default configuration .
- CheckTransactionInputs validates the inputs for a transaction input .
- ScMulAdd adds b to a .
- newServer creates a new server .
- ScReduce reduces s to the set s .
- handleSearchRawTransactions implements the searchrawtransactions command .
- assignField assigns a field to the given source .
- checkBlockSanity performs a sanity check on a block .
- opcodeCheckSigAlt checks that the altSigSuites is valid .
hcd Key Features
hcd Examples and Code Snippets
$ rm -rf $HOME/.hcd
$ rm -rf $HOME/.hcwallet
$ cd $HOME/go/src/github.com/HcashOrg/hcd
$ git pull
$ go install $(glide nv)
$ rm -rf $HOME/Library/Application\ Support/Hcwallet
$ rm -rf $HOME/Library/Application\ Support/Hcd
$ cd $HOME/go/src/github.c
Community Discussions
Trending Discussions on hcd
QUESTION
I have am335x related customized board and kernel(4.4.16) source code I configure the FTDI module driver. so after kernel start successfully I attach ftdi converter to usb port and then type lsmod command to check module list
...ANSWER
Answered 2020-Jul-11 at 14:41As you can see in the dmesg output:
[ 5.379690] usb 1-1: New USB device found, idVendor=10c4, idProduct=ea60
Looking that up, e.g. here: https://www.google.com/search?q=usb%20vendor%20id%2010c4
Tells you that it's a "Silicon Labs" USB device, who also make the CP2102.
The log does not identify other devices (ignore the linux kernel root hub). So either you have also a CP2102 attached (and the FTDI is not properly connected) or the device you think is a FTDI based device, is not.
In addition you can identify currently enumerated devices using the lsusb
command.
The automatic loading is usually done by udev
or a similar user space daemon/mechanism. A decent explanation can be found e.g. here: https://lwn.net/Articles/740455/
QUESTION
I have the following Google Analytics data:
GA field description:
Product is hits.product.v2ProductName
ProductSKU is hits.product.productSKU
Product Long SKU (CD) is a product scoped dimension and the index is 13.
Sample data:
Product, Product SKU, Product Long SKU (CD)
Liadalen turbukse dame, 307500, 10223990074006
Liadalen turbukse dame, 307500, 10223990001009
Liadalen turbukse dame, 307500, 10223990074010
Using the query below (inspired by YUHUI) I can only achieve to receive one row being the MAX row that has the largest Product Long SKU (CD). I cannot wrap my head around how to produce the exact data as my sample above in BQ as in three rows but the Product Long SKU (CD) is the variation?
...ANSWER
Answered 2020-May-11 at 22:57I don't know the exact output you want, but if you only want to list the products, you can use that query:
QUESTION
I have a Linux Kernel Module that checks for the presence of a specific USB device and performs a printk upon a match. This code works fine and performs as i expect.
...ANSWER
Answered 2020-May-10 at 08:35The function that handled the matching used a different alert level for the printk function. As such, the messages were not displayed to the console at that stage in the boot process.
What was:
QUESTION
Thanks for taking a look!
My goal is to get number of sessions, users, transactions, and revenue by device to certain subdomains within my site whose names are stored in a custom dimension. Below is the desired output and site_name is stored in customdimension 4.
The query below is from this answer using GA's public dataset. I've modified it by replacing pageviews with sessions, added the desired columns, and tried to isolate pageviews that are an entrance for the site_name because I thought that's the accurate method.
...ANSWER
Answered 2020-Apr-28 at 23:08When I add AND hits.isEntrance IS TRUE, I get the error Cannot access field isEntrance... Since I've unnested the hits, I'm surprised by this error
You should reference that unnested (UNNEST(hits) AS h
) instance - which is h
in this case - so use AND h.isEntrance IS TRUE
instead as in example below
QUESTION
I am attempting to write a Linux Kernel Module, I am stumbling at really simple issue.
I have a pointer to a structure provided by the kernel, i would simply like to copy one of the elements to a local variable.
When running my code, the data assigned to the vairable is returned as (null).
I have read many posts regarding memory management, but I am still missing something.
...ANSWER
Answered 2020-Feb-29 at 15:51As @ensc pointed out, kmalloc() instead of vmalloc() should've been used, the above code runs and returns the correct output
QUESTION
Why accessing constants defined in java interface from kotlin interface is not allowed or at least I am not able to access it. Is there any other way?
(Yes,I know The constant interface pattern is a poor use of interfaces from Effective Java book)
Following code (java) compiles
...ANSWER
Answered 2020-Jan-27 at 11:29You need to specify interface explicitly:
fun foo() = println(JSubsystem.IRIS)
Or you can import constant explicitly:
import your.package.name.JSubsystem.IRIS
QUESTION
my goal:
Count 1 for the session if the following two hits.customDimensions.index and associated hits.customDimensions.value appear in the same hits.hitNumber (every row is 1 session if main query is still nested):
['hits.customDimensions.index' = 43 with associated 'hits.customDimensions.value' IN ('login', 'payment', 'order', 'thankyou')] AND ['hits.customDimensions.index' = 10 with associated 'hits.customDimensions.value' = 'checkout' [in the same hits.hitNumber]
my problem:
I don't know how i can query two different hits.customDimensions.value in the same hits.hitNumber in one Subquery without different WITH-tables. If it's possible, which I'm sure, the query would be very easy and short. Since i don't know how to query this usecase in a subquery, I use an workaround which totals to 5 WITH-tables. I would appreciate an easy way to query this usecase
Explanation workaround query:
Table1: Queries all except the 'problem-metric'
Table2-3: Each table queries one hits.customDimensions.index with associated hits.customDimensions.value filtered for the correct value, sessionId and hitNumber
table4: left join table 2 with table 3 based on date, sessionID and hitNumber. Basically if hitNumber combined with sessionId from table2 and table3 match I count 1
table5: left join table1 with table4 to combine the data
...ANSWER
Answered 2020-Jan-10 at 23:10It's a bit like Inception, but maybe it helps to keep in mind that the input of unnest()
is an array and the output are table rows ...
QUESTION
I want to create a custom widget in hybris backoffice, which would allow importing CSV files from disk, and the data from the CSV file will be used to insert data into the database. However, from what I've found, hybris allows to upload files only from its Media container.
https://help.hybris.com/6.0.0/hcd/8babc4778669101493e3e9234f73106a.html
"The Default File Upload Editor enables you to upload and download binary content from the existing Media."
It makes it pretty cumbersome - to firstly upload the file to the Media, and only then choosing the uploaded file from Media to use it in my custom widget.
Is it possible to overcome this and upload file directly from disk?
...ANSWER
Answered 2018-May-31 at 11:24I'm answering my own question, someone might have a similar issue - it seems that above quote from Hybris documentation is misleading - if you use Default File Upload Editor it will allow you to choose a file from your disk.
e.g. in your widget's zul file:
QUESTION
The query .all memory_map
on the Linux system gives unexpected results as start memory location = 0x00000000
as well as end memory location = 0x00000000
for all the attributes. Does it just seem weird?
Operating System: Kali Linux
osquery version: 4.0.2 (Current)
I've tried searching on the issues at osquery/issues/
The exact replication of the code on the CLI is:
...ANSWER
Answered 2019-Oct-30 at 13:52The memory_map
table needs root permissions. Are you using root for the test?
(I can replicate that if I don't run with elevated permissions)
QUESTION
I've a Modelsim testbench in System Verilog testing a Verilog top-level module (ufm1
) with another Verilog module (wishbone
) used inside it, there's also a System Verilog "stub" (wishbone_sim
) that is connected to the DUT in the testbench.
The DUT and the inner module were originally in System Verilog and worked fine but I had to convert them to Verilog to be able to use Diamond LSE (leaving the testbench in System Verilog)
The inner module inside the DUT has an output which I'm connecting to a wire
(was originally a reg
in the System Verilog version because it gave an error otherwise) inside the DUT and then using the wire to assign to a reg
in a procedural block inside the DUT.
Inside the inner module this output is basically assigned directly from an input.
Now when I'm simulating this the input in the inner module is fine but the output (should be the same because it is a direct assign
) is different with Xs in place of 1s.
The issue only starts appearing when the output of the inner module (rd_data
) is assigned to the wire (wb_rd_data
), which looks strange to be because I don't see how connecting an output port to a wire would affect its value.
The wire inside the DUT is wb_rd_data
wich is connected to the rd_data
port of the inner wishbone
module.
How do I fix this?
DUT:
...ANSWER
Answered 2019-Sep-18 at 23:27The issue was that I had a default value for the wb_rd_data
wire inside the DUT:
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Vulnerabilities
No vulnerabilities reported
Install hcd
hcd (and utilities) will now be installed in either ```$GOROOT/bin``` or ```$GOPATH/bin``` depending on your configuration. If you did not already add the bin directory to your system path during Go installation, we recommend you do so now.
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