How to convert .crt to .pem [duplicate]
You can do this conversion with the OpenSSL library. Windows binaries can be found here. Once you have the library installed, the command you need to issue is:
Superscript in markdown (Github flavored)?
Use the <sup></sup>tag (<sub></sub> is the equivalent for subscripts). See this gist for an example.
Why do we use volatile keyword? [duplicate]
Consider this code, When this program gets compiled, the compiler may optimize this code, if it finds that the program never ever makes any attempt to change the value of some_int, so it may be tempted to optimize the while loop by changing it from while(some_int == 100) to something which is equivalent to while(true) so that the execution could be fast (since the condition in while loop … Read more
What does %*% mean in R [duplicate]
Use ?’%*%’ to get the documentation. %*% is matrix multiplication. For matrix multiplication, you need an m x n matrix times an n x p matrix.
IOPub data rate exceeded in Jupyter notebook (when viewing image)
Try this: Or this:
What is “stdafx.h” used for in Visual Studio?
All C++ compilers have one serious performance problem to deal with. Compiling C++ code is a long, slow process. Compiling headers included on top of C++ files is a very long, slow process. Compiling the huge header structures that form part of Windows API and other large API libraries is a very, very long, slow process. To have to do … Read more
How can I create a dropdown menu from a List in Tkinter?
To create a “drop down menu” you can use OptionMenu in tkinter Example of a basic OptionMenu: More information (including the script above) can be found here. Creating an OptionMenu of the months from a list would be as simple as: In order to retrieve the value the user has selected you can simply use a .get() on the variable that we assigned … Read more
phpMyAdmin access denied for user ‘root’@’localhost’ (using password: NO)
I am unable to connect to my MySQL in xampp I have this error: MySQL said: Documentation 1045 – Access denied for user ‘root’@’localhost’ (using password: NO) mysqli_real_connect(): (HY000/1045): Access denied for user ‘root’@’localhost’ (using password: NO) phpMyAdmin tried to connect to the MySQL server, and the server rejected the connection. You should check the … Read more
Is there an upside down caret character?
There’s ▲: ▲ and ▼: ▼
Convert tabs to spaces in Notepad++
To convert existing tabs to spaces, press Edit->Blank Operations->TAB to Space. If in the future you want to enter spaces instead of tab when you press tab key: Go to Settings->Preferences…->Language (since version 7.1) or Settings->Preferences…->Tab Settings (previous versions) Check Replace by space (Optional) You can set the number of spaces to use in place of a Tab by changing the Tab … Read more