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@Nullable annotation usage
...Since you are on Java8 or later there is a bit cleaner approach than an if block.
public String foo(@Nullable String mayBeNothing) {
return Optional.ofNullable(mayBeNothing).orElse("Really Nothing");
}
You can also throw some exception in there by swapping .orElse to
orElseThrow(() -> new ...
Symbolic links and synced folders in Vagrant
...le symlinks the following line needs to be added to the vm provider config block in the Vagrantfile:
config.vm.provider "virtualbox" do |v|
v.customize ["setextradata", :id, "VBoxInternal2/SharedFoldersEnableSymlinksCreate/v-root", "1"]
end
Additionally, on windows vagrant up needs to be exec...
FloatActionBtn 扩展：悬浮操作按钮扩展，可自定义颜色、大小、图标和位置 ...
...g:hover { color: #3773f5 } .feedback-pop .feedback-img { display: inline-block; width: 24px; height: 24px; margin-bottom: 4px; background: url(/static/images/feedback.svg) 50% / 100% auto no-repeat; } /*手机版：反馈浮动按钮收小*/ @media screen and (max-width: 700px) { .feedback-po...
图片轮播使用指导 · App Inventor 2 中文网
...g:hover { color: #3773f5 } .feedback-pop .feedback-img { display: inline-block; width: 24px; height: 24px; margin-bottom: 4px; background: url(/static/images/feedback.svg) 50% / 100% auto no-repeat; } /*手机版：反馈浮动按钮收小*/ @media screen and (max-width: 700px) { .feedback-po...
How do I convert Word files to PDF programmatically? [closed]
...tting app.Visible = false; and adding a call to app.Quit(); in the finally block.
– Dan Korn
May 5 at 20:29
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Cost of storing AMI
...ed, instead of the storage provisioned. Snapshots will not store any empty blocks.
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Peak signal detection in realtime timeseries data
...15)
JavaScript (Dirk Lüsebrink)
TypeScript (Jerry Gamble)
Perl (Alen)
PHP (radhoo)
Rules of thumb for configuring the algorithm
lag: the lag parameter determines how much your data will be smoothed and how adaptive the algorithm is to changes in the long-term average of the data. The more st...
Python List vs. Array - when to use?
...derstanding is that arrays are stored more efficiently (i.e. as contiguous blocks of memory vs. pointers to Python objects), but I am not aware of any performance benefit. Additionally, with arrays you must store primitives of the same type, whereas lists can store anything.
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Read file data without saving it in Flask
... (as stated in the werkzeug documentation). In both cases your script will block until the entirety of uploaded file is received.
The easiest way to work around this that I have found is:
1) Create your own file-like IO class where you do all the processing of the incoming data
2) In your script,...
Is the C# static constructor thread safe?
... get the handler and can put the code requiring the singleton into a using block to handle the release.
– CodexArcanum
Aug 19 '10 at 17:23
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