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What's the canonical way to check for type in Python?
...e way you want to use them. So if your function is looking for a writable file object, don't check that it's a subclass of file, just try to use its .write() method!
Of course, sometimes these nice abstractions break down and isinstance(obj, cls) is what you need. But use sparingly.
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Installing pip packages to $HOME folder
... Beware, that if you do this and then try to use conda environments the files installed in .local will always be hit first which can lead to very hard to track down import errors.
– tacaswell
May 11 '15 at 2:48
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What are the advantages of using nullptr?
...an implementation defined macro defined in certain standard library header files.
The origin of NULL is from C and C++ inherited it from C. The C standard defined NULL as 0 or (void *)0. But in C++ there is a subtle difference.
C++ could not accept this specification as it is. Unlike C, C++ is a st...
Linux vi arrow keys broken in insert mode
...re your .vimrc with this by adding this command to it. Create a new .vimrc file if not already present in your home directory, run echo $HOME to check home directory path.)
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How to uninstall npm modules in node js?
...rune on the terminal.
This will remove those packages, which exist in the filesystem, but are not used/declared package.json.
P.S> This is particularly useful on Windows, as you may often encounter problems with being unable to delete some files due to the "exceeded path length limit".
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“User interaction is not allowed” trying to sign an OSX app using codesign
... case of automated remote builds, storing the keychain password to an .env file is not that bad, since the .env file already contains sensitive keys to eg. AWS and Heroku. In our case the build related code sign credentials are stored in a newly created Keychain which is then removed after the build...
Create a symbolic link of directory in Ubuntu [closed]
... symlink is created (not where it points to). A particular pathname in the filesystem is either a regular file or it is a directory or it is a symlink (or it is a socket or pipe or device). It cannot be more than one of those things at the same time (i.e. you cannot have more than one distinct file ...
MIT官方已升级至2.70版本，中文网待测试并升级相关特性 - App Inventor 2 ...
...ionUpdate the Spanish translationMake the Sharing component respect DefaultFileScope when sharing relative path files (@arjuninv)Add TextChange event, MoveCursor methods, and HintColor property to TextBox and related components (@gordonlu310)Show translated help in property help widgetsAdd CircularP...
First letter capitalization for EditText
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Statically (i.e. in your layout XML file): set android:inputType="textCapSentences" on your EditText.
Programmatically: you have to include InputType.TYPE_CLASS_TEXT in the InputType of the EditText, e.g.
EditText editor = new EditText(this);
editor.setInput...
Showing line numbers in IPython/Jupyter Notebooks
...r create the custom folder.
In that folder, you should find a custom.js file. If there isn’t one, you should be able to create one. Open it in a text editor and
add this code:
define([
'base/js/namespace',
'base/js/events'
],
function(IPython, events) {
events.on("app...