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Futures vs. Promises
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Future and Promise are the two separate sides of an asynchronous operation.
std::promise is used by the "producer/writer" of the asynchronous operation.
std::future is used by the "consumer/reader" of the asynchronous operation.
The reason it is separated into th...
Python Regex instantly replace groups
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Way more clear than the doc! Did not understand how group was working with this one. They should add such example.
– Y0da
Apr 26 '18 at 21:46
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Timertask or Handler
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Handler is better than TimerTask.
The Java TimerTask and the Android Handler both allow you to schedule delayed and repeated tasks on background threads. However, the literature overwhelmingly recommends using Handler over TimerTask in Android (see here, here, here, here, here, and here).
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How can I override the OnBeforeUnload dialog and replace it with my own?
... in the dialog can't even be customized: bugzilla.mozilla.org/show_bug.cgi?id=588292
– David Hammond
Sep 29 '11 at 17:02
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Use logging print the output of pprint
...ould probably guard it with "if Logger.isEnabledFor(logging.DEBUG):" to avoid running pformat when you won't use its output: docs.python.org/2/library/…
– Ed Brannin
Aug 13 '13 at 16:58
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The role of #ifdef and #ifndef
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Text inside an ifdef/endif or ifndef/endif pair will be left in or removed by the pre-processor depending on the condition. ifdef means "if the following is defined" while ifndef means "if the following is not defined".
So:
#define...
emacs zoom in/zoom out
...o say that for example on my windows system, the binding command is not valid.
To use it on windows (or probably anywhere) you can use these generic bindings :
(global-set-key [C-mouse-wheel-up-event] 'text-scale-increase)
(global-set-key [C-mouse-wheel-down-event] 'text-scale-decrease)
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Update an outdated branch against master in a Git repo
...ner overall results to later readers, in my opinion, but that is nothing aside from personal taste.
To rebase and keep the branch you would:
git checkout <branch> && git rebase <target>
In your case, check out the old branch, then
git rebase master
to get it rebuilt agai...
List of MSBuild built-in variables
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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Add EBS to Ubuntu EC2 Instance
...d as a mount point. It is not required for functionality, but sometimes avoids the mistakes of creating files when the desired volume is not mounted.
– Eric Hammond
Mar 12 '13 at 15:40
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