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Building a complete online payment gateway like Paypal [closed]
...tails on comms format for authorization requests and end of day settlement files
Set up a test merchant account and develop auth/settlement software and go through the accreditation process. Most acquirers help you through this process for free, but when you want to register as an accredited PSP som...
Extracting just Month and Year separately from Pandas Datetime column
...column'].dt.to_period('M')
You could also use D for Day, 2M for 2 Months etc. for different sampling intervals, and in case one has time series data with time stamp, we can go for granular sampling intervals such as 45Min for 45 min, 15Min for 15 min sampling etc.
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Push to GitHub without a password using ssh-key
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ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
step 2.
Enter a file in which to save the key (/Users/you/.ssh/id_rsa): <here is file name and enter the key>
step 3.
Enter passphrase (empty for no passphrase): [Type a password]
Enter same passphrase again: [Type password again]
...
How to reverse a string in Go?
...nder the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the Lic...
Node.js app can't run on port 80 even though there's no other process blocking the port
...nerability in the application; also, if the application were to create any files, they'd be inaccesible for other users, making you use sudo even more.
– jesusiniesta
Oct 2 '17 at 10:31
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How do I delete/remove a shell function?
...ke realiases, refunctions, resetopts, reenv, etc to "re-source" respective files, if you've separated/grouped them as such.)
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What's the fundamental difference between MFC and ATL?
...ts, documents (if you like and/or use that pattern), and compound document files. WTL has its share of cool features, but MFC is the clear feature champ. Both environments support framed main window architectures (frame window with separate view window), SDI and MDI applications, split windows, dial...
How to create a simple proxy in C#?
...If you're using HttpListener, you just write the response to HttpListener.GetContext().Response.OutputStream. No need to care for the address.
– OregonGhost
Oct 22 '08 at 18:11
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Printing hexadecimal characters in C
...ect conversion specifications for the fixed-width character types (int8_t, etc) are defined in the header <cinttypes>(C++) or <inttypes.h> (C) (although PRIdMAX, PRIuMAX, etc is synonymous with %jd, %ju, etc).
As for his point about signed vs unsigned, in this case it does not matter si...
Querying DynamoDB by date
...hash keys; but only if you have a range key that varies. Think of it like file formats; you can have 2 files with the same name in the same folder as long as their format is different. If their format is the same, their name must be different. The same concept applies to DynamoDB's hash/range key...