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Can I update a component's props in React.js?
...w: and replaced by a combination of getDerivedStateFromProps and componentDidUpdate.
– bvdb
Sep 21 '18 at 20:54
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show 5 more comments
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Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
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thanks @hhaamu. Yep did try the docs but your above is much more concise.
– Thomas Browne
Jul 28 '09 at 20:17
119
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How to percent-encode URL parameters in Python?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
Difference between Xcode version (CFBundleShortVersionString) and build (CFBundleVersion)
...ssage Apple give when submitting an app: "The binary you uploaded was invalid. The key CFBundleVersion in the Info.plist file must contain a higher version than that of the previously uploaded version."
– malhal
Nov 2 '12 at 21:12
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How can I make a JUnit Test wait?
...aying something like Using Thread.sleep in a test is just generally a bad idea. It creates brittle tests that can fail unpredictably depending on environment ("Passes on my machine!") or load. Don't rely on timing (use mocks) or use libraries such as Awaitility for asynchroneous testing.
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Unresolved external symbol on static class members
... If you are writing header-only library, you can use this technique to avoid cpp file: stackoverflow.com/questions/11709859/…
– Shital Shah
Nov 18 '16 at 18:49
add a commen...
How to set up a git project to use an external repo submodule?
...won't change much from version-to-version -- using a submodule doesn't provide much value.
– memmons
Feb 17 '13 at 22:05
2
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What is digest authentication?
...along with the username and the realm to attempt to authenticate.
Server-side the same method is used to generate a hashkey, only instead of using the password typed in to the browser the server looks up the expected password for the user from its user DB. It looks up the stored password for this u...
How can I merge two commits into one if I already started rebase?
...s, a was the first commit, then b, and finally c. After committing c we decide to squash b and c together:
(Note: Running git log pipes its output into a pager, less by default on most platforms. To quit the pager and return to your command prompt, press the q key.)
Running git rebase --interactiv...
Intersection of two lists in Bash
... just used this in an effort to find usages of a public method error() provided by a trait, in combination with git grep, and it was awesome! I ran $ comm -12 <(git grep -il "\$this->error(" -- "*.php") <(git grep -il "Dash_Api_Json_Response" -- "*.php"), and luckily I ended up with the nam...