jfs | Constraint solver based on coverage-guided fuzzing | Compiler library
kandi X-RAY | jfs Summary
kandi X-RAY | jfs Summary
JFS (Just Fuzz it Solver) (originally JIT Fuzzing Solver) is an experimental constraint solver designed to investigate using coverage guided fuzzing as an incomplete strategy for solving boolean, BitVector, and floating-point constraints. JFS supports constraints in the SMT-LIBv2 constraint langauge in the QF_BV, QF_BVFP, and QF_FP logics. JFS's primary purpose however is solve floating-point constraints. JFS is built on top of the following projects.
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QUESTION
I'm pretty new to python and tkinter so I'm struggling with creating a script that reads the terminal output into a label or Gui in tkinter. I've searched around and can't find any tutorials on how to do it, a lot of forums have specific or old code which makes it really difficult to adapt especially for a beginner. The code that I found that looks like it will work best for what I'm trying to accomplish was made by jfs, the only problem is that I keep getting errors which for the life of me I cant figure out.
Here is the code:
...ANSWER
Answered 2021-Jun-10 at 14:10I have the problem too, this was my solution. I post it on [https://github.com/ianfun/notes/blob/main/editor/main.py].
data.py was generate by build.py.
I cannot found grate terminal like vscode in python.
note:use key right to select
you can read idlelib run.py
QUESTION
I'm trying to create a web application. JDK 11 Server Payara 5.2020 (GlassFish). The app is almost empty. Only interfaces are described. And configuration files. An error occurs at startup:
...ANSWER
Answered 2020-Nov-18 at 05:41It might be happening because of snakeYml version conflict between JDK and Spring in the build path
QUESTION
I'm using Matillion to load data into Snowflake, both on Azure. When I create tables I specify default values for the columns, I don't like having NULLs in the warehouse.
From what I've read, the Database Query orchestration component in Matillion for Snowflake will put the retrieved data set into an Azure blob and use the Snowflake COPY command to move the data from the blob to the target table.
The result is that NULL values are still there in the target table.
Can someone confirm that the COPY command does some kind of bulk data copy and that the default values are effective only with INSERT statements?
If so I'll just use trap the NULL values at the source.
Thanks.
JFS.
...ANSWER
Answered 2020-Jun-17 at 15:23It isn't mentioned in a straight-forward way but the COPY INTO … TABLE
statement documentation does specify that it will use the default only for skipped column names (and not in other scenarios):
( col_name [ , col_name ... ] )
[ … ]
Any columns excluded from this column list are populated by their default value
Additionally, the NULL-use behaviour is mentioned for another scenario where data may be missing, making no note of the use of defaults:
ERROR_ON_COLUMN_COUNT_MISMATCH = TRUE | FALSE
[ … ]
If the input file contains records with fewer fields than columns in the table, the non-matching columns in the table are loaded with NULL values.
QUESTION
We are migrating a bunch of COBOL programs from z/OS to AIX 7. We are using the IBM COBOL Compiler (5.1) on AIX. Now I don't understand how the file access and the file system work for COBOL on AIX. The COBOL code is straight forward with
...ANSWER
Answered 2020-May-13 at 01:02I can see where this would be confusing... Especially coming from a Non-POSIX environment.
I'll start with the answer, and then provide more information.
For a normal text file, you want RSD, and to make sure that the \n is column 81. A record length of 80 is just the data portion, not including the delimiter. QSAM (fixed length) would appear to work, but would return the \n as part of the data!
Your FS=37 means that the attributes of the file don't match what the program is asking for (more esoteric than, say, FS=39 - invalid fixed attributes). In this case, it means the file you wanted to open was not, really, a STL file.
By filesystem we mean how the data is physically stored on the platter, SSD, RAM, ... More accurately, how we format the record before handing it off to the next lower level of I/O.
There are two basic types of filesystems:
Native (on top of JFS2, JFS, NFS, CIFS, ...) RSD, QSAM, LSQ, STL, SdU. These filesystems can be operated on by standard OS utilities
Non-Native (on top of another product) DB2 (DB2) and SFS (TxSeries/CICS). These filesystems are invisible to standard OS utilities
Then, there are groupings by type of COBOL organization (preferred):
- Sequential: All filesystems support Sequential...z/OS: QSAM, VSAM
- Relative: STL, SdU, SFS, DB2...........z/OS: VSAM
- Indexed: STL, SdU, SFS, DB2...........z/OS: VSAM
Of the Native filesystems, QSAM(variable), STL and SDU contain metadata, making them not really viewable in vi,cat,... Ok... you can open them in vi, but it will look like utter garbage.
QSAM is a faithful implementation of z/OS:
- Fixed length records: Raw data, no BDW/RDW, no line delimiters (\n).
- Variable length records: RDW + raw data (no \n)... However there is no BDW.
RSD is a normal stream (text) file; each record is terminated with \n, which is not counted in the record length (the program will never see them).
LSQ (Line Sequential) is the same as on z/OS - messy semantics.
VSAM is an alias for a filesystem that provides all the features of z/OS VSAM. Unfortunately, for historical reasons, it points to SdU...
STL is, by far and away, better at everything than is SdU.
SdU was the first filesystem to cover QSAM and VSAM, but is old and decrepit, compared to STL.
QUESTION
ANSWER
Answered 2019-Sep-11 at 12:21Finally found a solution. Restarting the computer did not help. Shutting down the computer - did help. Maybe it has a connection to the power of the Bluetooth device.
Hope it helps.
QUESTION
Let's say I've got a nested dictionary of the form:
...ANSWER
Answered 2019-Dec-02 at 21:11Returning is what makes the result incomplete. Instead of returning, use a separate list to track your paths. I'm using list cur_list
here, and returning it at the very end of the loop:
QUESTION
i need to change the a line in the ascii header of a huge .ply binary file (point cloud format)[see : http://paulbourke.net/dataformats/ply/ ]. I don't need to change anything else.
I'm using python 3.7
i've already been through some solution to replace in text files [How to search and replace text in a file using Python? but neither the Jack Aidley solution's nor jfs solution's match my needs. The first mean to load and rewrite the entire file, which in my case need to be avoided. The second isn't possible with the binary parts of the file.
I need to go from that :
...ANSWER
Answered 2019-Jun-12 at 15:00Chances are that sed
is up to the task:
QUESTION
Ubuntu is apparently failing to correctly setup exFAT support after installing the exfat-fuse
and exfat-utils
dependencies.
exFAT is nowhere listed on filesystems sources. Any idea on what is going on? Am I missing something?
...ANSWER
Answered 2017-May-11 at 11:33Issue solved. Forgot to specify the volume offset (mount -o offset=byteoffset
) in the image while mounting, which explains why the filesystem was not being found.
QUESTION
I am creating a simple python script to find and replace strings inside of files which are also inside of sub-folders and so on. This calls for recursion.
The following script finds and replaces a string for another string found in every file inside of every folder of the target parent folder.
I've found this post on here suggesting the use of fileinput
module in order to avoid reading entire files into memory which could slow things down...
...simplify the text replacement in a file without requiring to read the whole file in memory...
Python is very dynamic and honestly, I get lost on the many different ways to accomplish the same task.
How can I integrate this approach into my script below?
...ANSWER
Answered 2018-Nov-22 at 18:38Your check that the inputs are '.txt' files is good; it relieves you of needing to worry about passing 'rb' or 'wb' to open()
.
You say you don't want to allocate N bytes for an N-byte file, for fear that occasionally N may be quite large. Better to limit the memory allocation to size of longest text line rather than size of biggest file. Let's break out a helper function. Delete / replace these lines:
QUESTION
I'm trying to find a component via FacesContext in my JFS generated HTML DOM but the result is always null. I've tried everything...
This is out of my @ManagedBean and @ViewScoped class:
...ANSWER
Answered 2018-Sep-25 at 15:53It was just a writing problem. I needed to remove the first : in the string:
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