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How do I change column default value in PostgreSQL?

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CSS: Change image src on img:hover

...into view while it needs to load on hover, you can preload it on your page by putting it somewhere hidden: <img src="..." style="visibility: hidden" /> – Steven Jeuris Jul 28 '18 at 19:04 ...
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How to use Greek symbols in ggplot2?

...ne facet_grid(~paste0(gear, " Gears \u03a9")) Created on 2019-08-28 by the reprex package (v0.3.0) share | improve this answer | follow | ...
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Checking a Python module version at runtime

...he various tools available (including the best one pkg_resources mentioned by this other answer), as most of them do not cover all cases. For example built-in modules modules not installed but just added to the python path (by your IDE for example) two versions of the same module available (one i...
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Git stash: “Cannot apply to a dirty working tree, please stage your changes”

... You can do this without having to stash your current changes by exporting the stash you want as a patch file and manually applying it. For example, say you want to apply stash@{0} to a dirty tree: Export stash@{0} as a patch: git stash show -p stash@{0} > Stash0.patch Manually ...
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Python regular expressions return true/false

... Thanks -- corrected that. I was just going by what I saw in the REPL. – Gavin Anderegg Jul 5 '11 at 0:07 add a comment  |  ...
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Precedence and bitmask operations

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Facebook Like Button - how to disable Comment pop up?

... @tybro, if class names change by any chance from Facebook end then of course one can change the rule easily from the CSS as well, it doesn't require any kind of functional change, that's the easiest fix to hide the comment popup till the time FB doesn't m...
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Element-wise addition of 2 lists?

... If you use those huge arrays, the numpy solution by @BasSwinckels is probably something you should be looking at. – Henry Gomersall Sep 10 '13 at 8:34 1 ...
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How can I get jQuery to perform a synchronous, rather than asynchronous, Ajax request?

... You can put the jQuery's Ajax setup in synchronous mode by calling jQuery.ajaxSetup({async:false}); And then perform your Ajax calls using jQuery.get( ... ); Then just turning it on again once jQuery.ajaxSetup({async:true}); I guess it works out the same thing as suggested ...