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What is a mixin, and why are they useful?
...ou want to provide a lot of optional features for a class.
You want to use one particular feature in a lot of different classes.
For an example of number one, consider werkzeug's request and response system. I can make a plain old request object by saying:
from werkzeug import BaseRequest
class...
What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?
... path does not really consider those issues or existence of any of the components, only the syntax of it.
– escape-llc
Sep 13 '16 at 9:58
1
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rsync error: failed to set times on “/foo/bar”: Operation not permitted
...this answer has been voted, and therefore has been hopefully useful to someone, I'm extending it to make it clearer.
The reason why this happens is that rsync is probably trying to set an arbitrary modification time (mtime) when copying files.
In order to do this darwin's system utime() function r...
How to set child process' environment variable in Makefile
...puts the correct expansion for the first row, but only echo for the second one. PROJ_ROOT is not set after running make. Spaces around = give "bad variable name" for export. Having the first row as prerequisite as in your example gives "commands commence before first target"
– ...
jquery UI dialog: how to initialize without a title bar?
...Stuff' and the css like that:
.noTitleStuff .ui-dialog-titlebar {display:none}
too simple !! but i took 1 day to think why my previous id->class drilling method was not working. In fact when you call .dialog() method the div you transform become a child of another div (the real dialog div) and...
How to force child div to be 100% of parent div's height without specifying parent's height?
...d column only as you would have expected.
– Julien Kronegg
Mar 7 '13 at 12:17
@bfritz, a better solution would be to u...
Is there a way for multiple processes to share a listening socket?
...
So for one connection, either parent or child gets it. But who gets the connection is indeterministic, right?
– Hot.PxL
May 2 '15 at 5:36
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Cloning a MySQL database on the same MySql instance
...he OP is getting at is they don't want to externalize the copy: can it be done purely within mysql?
– cletus
Mar 23 '09 at 21:43
3
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What is the point of interfaces in PHP?
...ses?
To prevent multiple inheritance (can cause multiple known problems).
One of such problems:
The "diamond problem" (sometimes referred to as the "deadly diamond of
death") is an ambiguity that arises when two classes B and C inherit
from A and class D inherits from both B and C. If there...
Mismatch Detected for 'RuntimeLibrary'
...hat the above two pieces of code are called A and B. A is compiled against one version of the standard library, and B against another. In A's view, some random object that a standard function returns to it (e.g. a block of memory or an iterator or a FILE object or whatever) has some specific size an...