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How do I use a custom deleter with a std::unique_ptr member?
...uplicator's approach, which has the same advantages (inlining deletion, no extra storage on each unique_ptr, no need to provide an instance of the deleter when constructing), and adds the benefit of being able to use std::unique_ptr<Bar> anywhere without needing to remember to use the special ...
How can I create directories recursively? [duplicate]
...nal calls to the shell commands mkdir, chmod, and chown. Make sure to pass extra flags to recursively affect directories:
>>> import subprocess
>>> subprocess.check_output(['mkdir', '-p', 'first/second/third'])
# Equivalent to running 'mkdir -p first/second/third' in a shell (whi...
Permission denied on accessing host directory in Docker
...er, this specific case is different.
The dot at the end of the permission string, drwxr-xr-x., indicates SELinux is configured. When using a host mount with SELinux, you need to pass an extra option to the end of the volume definition:
The z option indicates that the bind mount content is sh...
How does the @property decorator work in Python?
...erty()
<property object at 0x10ff07940>
It is this object that has extra methods:
>>> property().getter
<built-in method getter of property object at 0x10ff07998>
>>> property().setter
<built-in method setter of property object at 0x10ff07940>
>>> prop...
Set the table column width constant regardless of the amount of text in its cells?
...is Chris Coyer article explains it well: css-tricks.com/fixing-tables-long-strings
– cssyphus
Nov 12 '15 at 2:33
add a comment
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Why isn't sizeof for a struct equal to the sum of sizeof of each member?
...essor, too. Therefore, most compilers will pad
the structure (as if with extra, invisible fields) like this:
+-------+-------+-------+-------+
| a | pad1 |
+-------+-------+-------+-------+
| b | pad2 |
+-------+-------+-------+-------+
| c ...
What is two way binding?
... emberjs, to create two way binding is by creating a new property with the string Binding at the end, then specifying a path from the global scope:
App.wife = Ember.Object.create({
householdIncome: 80000
});
App.husband = Ember.Object.create({
householdIncomeBinding: 'App.wife.householdIncome'...
Object of custom type as dictionary key
...have __hash__ by default that calls id(self), as you noted.
There is some extra tips from the documentation.:
Classes which inherit a __hash__()
method from a parent class but change
the meaning of __cmp__() or __eq__()
such that the hash value returned is
no longer appropriate (e.g. by...
difference between fork and branch on github
... it to my PC effectively), al the branches are on my PC? But in one branch extra files have been added. So will my PC have those files or not?
– Jonathan.
Feb 15 '11 at 21:25
1
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How to free memory in Java?
...emory you may want to consider.
For example, say you'd declared a List<String> at the beginning of a method which grew in size to be very large, but was only required until half-way through the method. You could at this point set the List reference to null to allow the garbage collector to p...