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Convert float to double without losing precision
...at f = 0.1F;
double d = f;
Then the value of f might be exactly 0.100000234523. d will have exactly the same value, but when you convert it to a string it will "trust" that it's accurate to a higher precision, so won't round off as early, and you'll see the "extra digits" which were already there,...
More elegant “ps aux | grep -v grep”
...
283
The usual technique is this:
ps aux | egrep '[t]erminal'
This will match lines containing ter...
Automate ssh-keygen -t rsa so it does not ask for a passphrase
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232
To generate a SSH keypair without being prompted for a passphrase you can do the following:
$ ...
Can you grab or delete between parentheses in vi/vim?
...cts.
To solve your specific problem you would do the following:
printf("%3.0f\t%6.1f\n", fahr, ((5.0/9.0) * (fahr-32)));
^
Let's say your cursor is positioned at ^. Enter the following sequence to select the part you are looking for:
v2a)
First v enters Visu...
How can I kill a process by name instead of PID?
...ooshshoosh
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Popup弹出菜单扩展 · App Inventor 2 中文网
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How do you tell the Visual Studio project type from an existing Visual Studio project
...eGuids>
ASP.NET and WCF projects contain:
<ProjectTypeGuids>{603c0e0b-db56-11dc-be95-000d561079b0};{349c5851-65df-11da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}</ProjectTypeGuids>
<OutputType>Library</OutputType>
The GUIDs do something to define exactl...
Popup弹出菜单扩展 · App Inventor 2 中文网
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Python memoising/deferred lookup property decorator
...est()
>>> t.__dict__
{}
>>> t.a
generating "a"
[0, 1, 2, 3, 4]
>>> t.__dict__
{'_lazy_a': [0, 1, 2, 3, 4]}
>>> t.a
[0, 1, 2, 3, 4]
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Can two different strings generate the same MD5 hash code?
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93
For a set of even billions of assets, the chances of random collisions are negligibly small -- n...