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Easy idiomatic way to define Ordering for a simple case class
...This works because the companion to Ordered defines an implicit conversion from Ordering[T] to Ordered[T] which is in scope for any class implementing Ordered. The existence of implicit Orderings for Tuples enables a conversion from TupleN[...] to Ordered[TupleN[...]] provided an implicit Ordering[T...
Sass calculate percent minus px
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Sass cannot perform arithmetic on values that cannot be converted from one unit to the next. Sass has no way of knowing exactly how wide "100%" is in terms of pixels or any other unit. That's something only the browser knows.
You need to use calc() instead. Check browser compatibility o...
NSString with \n or line break
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I found that when I was reading strings in from a .plist file, occurrences of "\n" were parsed as "\\n". The solution for me was to replace occurrences of "\\n" with "\n". For example, given an instance of NSString named myString read in from my .plist file, I had to ...
Can two different strings generate the same MD5 hash code?
...53,7 @@
6d
a0
d1
-55
+d5
5d
83
60
Above collision example is taken from Marc Stevens: Single-block collision for MD5, 2012; he explains his method, with source code (alternate link to the paper).
Another test:
$ echo '0e306561559aa787d00bc6f70bbdfe3404cf03659e704f8534c00ffb659c4c8740cc94...
TypeScript function overloading
...two functions taking same number of arguments. So, TypeScript restricts us from creating such functions.
TypeScript supports overloading based on number of parameters, but the steps to be followed are a bit different if we compare to OO languages. In answer to another SO question, someone explained...
Why does Java allow us to compile a class with a name different than the file name?
...ots of single method interface implementations in their own separate files from the main class they are used in. (I'm thinking of action listeners in particular)
There is a good explanation of all nested classes in the Nested Classes Java tutorial on Oracle's website, which has examples of each. It...
How to change a table name using an SQL query?
...luded in the first parameter (that is, this cannot be used to move a table from one schema to another). So, for example, this is valid:
EXEC sp_rename 'myschema.Stu_Table', 'Stu_Table_10'
share
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Why should I declare a virtual destructor for an abstract class in C++?
....delete]/: ... if the static type of the object to be deleted is different from its dynamic type, ... the static type shall have a virtual destructor or the behavior is undefined. .... It would still be undefined if Derived used an implicitly generated destructor.
– Mankarse
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Python's os.makedirs doesn't understand “~” in my path
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You can now do it like
from srbib import abs_path
my_dir = abs_path('~/path/to/dir')
if not os.path.exists(my_dir):
os.makedirs(my_dir)
Please refer to https://stackoverflow.com/a/54190233/6799074 for usage of srblib.abs_path
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Make the first letter uppercase inside a django template
I am pulling a name from a database which is stored as myname . How do I display this inside a Django template as Myname , with the first letter being in uppercase.
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