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Finding diff between current and last version
... Use git show HEAD~1 to show the last-but-one commit, and git show HEAD~2, etc. for older commits. Show just a single file via git show HEAD~2 my_file.
– Florian Brucker
Mar 3 '16 at 10:43
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Rails: How to change the text on the submit button in a Rails Form
... is not acceptable because of used text or you need additionally add class etc., so you can directly override value:
<%= f.submit class: 'btn btn-primary', value: 'Login' %>
or:
<%= f.button :submit, class: 'btn btn-primary', value: 'Login' %>
By the way it was mentioned by @cassi....
Server is already running in Rails
...l the running process
$ kill -9 5946
$ rm tmp/server.pids
foreman start etc start the service
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Difference between java.io.PrintWriter and java.io.BufferedWriter?
...king about IOException, in that every other IO abstraction (Reader, Writer etc) declares that its methods throw IOException if something goes wrong - PrintWriter doesn't.
– Jon Skeet
May 27 '19 at 5:42
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How to “perfectly” override a dict?
...reventing pickling from working, and do I need to implement
__setstate__ etc?
Do I need repr, update and __init__?
Should I just use mutablemapping (it seems one shouldn't use UserDict
or DictMixin)? If so, how? The docs aren't exactly enlightening.
The accepted answer would be my first...
Java RegEx meta character (.) and ordinary dot?
...ep it means "word boundary".
So write -?\d+\.\d+\$ to match 1.50$, -2.00$ etc. and [(){}[\]] for a character class that matches all kinds of brackets/braces/parentheses.
If you need to transform a user input string into a regex-safe form, use java.util.regex.Pattern.quote.
Further reading: Jan Go...
Copying files into the application folder at compile time
... are macro values for frequently used things like project path, item name, etc.
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is there a Java equivalent to null coalescing operator (??) in C#? [duplicate]
...make sense conceptually. However, the wrapper classes (Integer, Character, etc.), as well as any other instantiable class can be null.
Besides that fact, there isn't any short-hand syntax for a null coalescing operator. You must use the expanded form.
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SVN Repository Search [closed]
... it was necessary to use http as the protocol (svn list -R http://repo/svn/etc).
– Charles Wood
Oct 24 '13 at 22:16
do...
How to sort an ArrayList?
...herModel and have a line like this : return lhs.id > rhs.id ? -1 : .. etc
– user2808054
Jan 12 '18 at 17:54
The c...