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How different is Objective-C from C++? [closed]
What are the main differences between Objective-C and C++ in terms of the syntax, features, paradigms, frameworks and libraries?
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Catching all javascript unhandled exceptions
...rror events do not trigger window.onerror, you have to listen for them specifically." -developer.mozilla.org/en-US/docs/Web/API/…
– shusson
Mar 3 '14 at 0:33
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Where is the documentation for the values() method of Enum?
...alues() method of that type.
Enum Types, Section 8.9, Java Language Specification
The values function simply list all values of the enumeration.
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Easy way to list node modules I have npm linked?
...ry contents (e.g. ls -l node_modules | grep ^l)? They're normal symlinks.
If you really need to find all symlinks, you could try something like find / -type d -name "node_modules" 2>/dev/null | xargs -I{} find {} -type l -maxdepth 1 | xargs ls -l.
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What's the difference between tilde(~) and caret(^) in package.json?
... ~ assumes you can trust minor and point releases from your dependencies. If you are publishing a library and want other people to trust you, DO NOT BLINDLY ACCEPT DOWNSTREAM DEPENDENCIES. A bad dot release from your dependency can cause a chain reaction upstream, and will have people knocking at Y...
EC2 instance types's exact network performance?
I cannot find exact network performance details for different EC2 instance types on Amazon. Instead, they are only saying:
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How can I shuffle the lines of a text file on the Unix command line or in a shell script?
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shuf and sort -R differ slightly, because sort -R randomly orders the elements according to hash of them, which is, sort -R will put the repeated elements together, while shuf shuffles all the elements randomly.
– SeMeKh
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Stacking Divs from Bottom to Top
...e answers miss the scrollbar point of your question. And it's a tough one. If you only need this to work for modern browsers and IE 8+ you can use table positioning, vertical-align:bottom and max-height. See MDN for specific browser compatibility.
Demo (vertical-align)
.wrapper {
display: table-...
Select Row number in postgres
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You should also specify an order in OVER clause: OVER (ORDER BY id). Otherwise the order is not guaranteed.
– AlexM
Jun 14 '16 at 4:30
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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
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Be careful with this approach -- if you had other attributes about that column (for example a :limit constraint), you need to repeat those attributes when using change_column, or they will be lost. For this reason, I prefer to use change_column_null
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