binary

问题 This is most probably the dumbest question anyone would ask, but regardless I hope I will find a clear answer for this. My question is - How is an integer stored in computer memory? In c# an integer is of size 32 bit. MSDN says we can store numbers from -2,147,483,648 to 2,147,483,647 inside an integer variable. As per my understanding a bit can store only 2 values i.e 0 & 1. If I can store only 0 or 1 in a bit, how will I be able to store numbers 2 to 9 inside a bit? More precisely, say I

问题 This is most probably the dumbest question anyone would ask, but regardless I hope I will find a clear answer for this. My question is - How is an integer stored in computer memory? In c# an integer is of size 32 bit. MSDN says we can store numbers from -2,147,483,648 to 2,147,483,647 inside an integer variable. As per my understanding a bit can store only 2 values i.e 0 & 1. If I can store only 0 or 1 in a bit, how will I be able to store numbers 2 to 9 inside a bit? More precisely, say I

问题 I have a directed Multigraph and would like to identify the nodes with a binary string representing the coordinates of each node. How can I build a list of these coordinates depending on the dimension of the multigraph? Also the order of the coordinates is relevant. The first number is zero, then all numbers with one 1 in them, then all numbers with two 1s in them and so on. All these groupings of numbers have to be in reversed lexicographic order. An example: n = 3 bin_str = [000, 100, 010,

问题 As part of a small python project I'm working on, I needed to convert text to a binary string. To accomplish this I used list(map(bin,bytearray(message,'utf8'))) The result was 0b1100010 and I get the 1100010 part, but what does the 0b part mean? 回答1: This is how Python tells you what base the number is: Base 2 looks like this: 0b111010 Base 16 looks like this: 0x... Base 8 looks like this: 0... and etc. Hope it helps! 回答2: 0b is the Python prefix for the representation of binary numbers. For

问题 As part of a small python project I'm working on, I needed to convert text to a binary string. To accomplish this I used list(map(bin,bytearray(message,'utf8'))) The result was 0b1100010 and I get the 1100010 part, but what does the 0b part mean? 回答1: This is how Python tells you what base the number is: Base 2 looks like this: 0b111010 Base 16 looks like this: 0x... Base 8 looks like this: 0... and etc. Hope it helps! 回答2: 0b is the Python prefix for the representation of binary numbers. For

问题 Given a binary(16) column, how do I display its value as a hexadecimal number? I've been experimenting in the console a little below, and I'm not getting the results I expect. Could it be that I'm not converting numbers to binary properly? I have the following sample query: select hex(cast(10 as binary)) , but the output is rather unexpected: 3130 . Basically, it appears to just take the decimal representation of the number, and insert a 3 digit before each digit, e.g. 2 -> 32 , 22 -> 3232 ,

问题 I am writing a small instrumentation tool. I must insert the instrumentation routine within the binary file. A good approach should be to insert those routines in a separate code segment and a separate data segment, could you explain how to accomplish this? Furthemore how can I modify the size of the code segment in the original file? Best, 回答1: I must insert the instrumentation routine within the binary file. A good approach should be to insert those routines in a separate code segment and a

问题 I am writing a small instrumentation tool. I must insert the instrumentation routine within the binary file. A good approach should be to insert those routines in a separate code segment and a separate data segment, could you explain how to accomplish this? Furthemore how can I modify the size of the code segment in the original file? Best, 回答1: I must insert the instrumentation routine within the binary file. A good approach should be to insert those routines in a separate code segment and a

问题 I want to dump a sha checksum (here using sha1sum , I know it is not to be used for crypto, do not worry this is fine for my need) to disk from a bash script. So far, I am able to get it dumped (without anything extra...). But I do not manage to dump it in binary format, instead I am only getting a plaintext hex dump: $ echo "bla" | sha1sum | awk '{print $1}' | head -c-1 > test $ ls -lrth test -rw-r--r-- 1 jrlab jrlab 40 mars 2 15:02 test $ xxd test 00000000: 3034 3735 3935 6430 6661 6539

问题 I am trying to build binary package of my code, the build process completed with success, but when I m trying to run the binary file, I got such an error: ImportError: OpenCV loader: missing configuration file: ['config.py']. Check OpenCV installation. Error log: 回答1: I have solved this problem by upgrading opencv-python and pyinstaller pip install --upgrade opencv-python pip install --upgrade pyinstaller 来源： https://stackoverflow.com/questions/55319943/pyinstalleropen-cv-importerror-opencv