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How to check if variable's type matches Type stored in a variable
...is Animal; // true also! Every tiger is an animal.
But checking for type identity with reflection checks for identity, not for compatibility
bool b5 = x.GetType() == typeof(Tiger); // true
bool b6 = x.GetType() == typeof(Animal); // false! even though x is an animal
or with the type variable
boo...
How do I install imagemagick with homebrew?
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What is the difference between “Rollback…” and “Back Out Submitted Changelist #####” in Perforce P4V
...stored to the state they were in before you submitted that changelist, provided no changes have been made to those files since. If subsequent changes have been made to any of those files, Perforce will tell you that those files are now out of date. You will have to sync to the head revision and th...
Switch branch names in git
... the problem. I was working on master and committed some stuff and then decided I wanted to put that work on hold. I backed up a few commits and then branched from before I started my crap work. Practically this works fine, I just now have a different branch as my main development branch. I'm wonder...
How to raise a ValueError?
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Did you know that, if you don't want to use the message, you can just raise ValueError instead of raise ValueError()?
– Tomasz Gandor
Sep 20 '19 at 15:14
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How to set cookie in node js using express framework?
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The order in which you use middleware in Express matters: middleware declared earlier will get called first, and if it can handle a request, any middleware declared later will not get called.
If express.static is handling the request, you need to move ...
Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
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Multiple submit buttons in an HTML form
...ction" method="get">
<input type="text" name="abc">
<div id="buttons">
<input type="submit" class="f" name="next" value="Next">
<input type="submit" class="f" name="prev" value="Prev">
<div class="clr"></div><!-- This div prevents later ...
How to create directories recursively in ruby?
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Poping system command into sub-process is not the best idea. It's better to do it with the Ruby standard library to get error handling, check the result, etc.
– noraj
Oct 7 '19 at 21:31
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Get the name of the currently executing method
...tly executing method's name as a symbol.
On ruby 1.9, both of them behave identically (as far as the docs and my testing are concerned).
On ruby 2.1 & 2.2 __callee__ behaves differently if you call an alias of the defined method. The docs for the two are different:
__method__: "the name at t...