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List of zeros in python [duplicate]
...tertools.repeat and [0] * n will create lists whose elements refer to same id. This is not a problem with immutable objects like integers or strings but if you try to create list of mutable objects like a list of lists ([[]] * n) then all the elements will refer to the same object.
a = [[]] * 10
a...
Code-first vs Model/Database-first [closed]
...ruft, less bloat
Using an existing database to generate a .edmx model file and the
associated code models results in a giant pile of auto generated code.
You’re implored never to touch these generated files lest you break
something, or your changes get overwritten on the next generation...
TSQL Pivot without aggregate function
... = that value..
In this case, you could also self join 5 times on customerid, filter by dbColumnName per table reference. It may work out better.
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How do you get git to always pull from a specific branch?
...Under [branch "master"], try adding the following to the repo's Git config file (.git/config):
[branch "master"]
remote = origin
merge = refs/heads/master
This tells Git 2 things:
When you're on the master branch, the default remote is origin.
When using git pull on the master branch, w...
Using curl POST with variables defined in bash script functions
...you have several options, one of which is to type up the function in a new file and then at the command line run source my_new_file to define the function in your current environment. After that you can run the curl command as indicated.
– Sir Athos
Mar 5 '19 a...
form with no action and where enter does not reload page
...ause a page reload in some browsers.. I've found that action="javascript:void(0);" works well.
– Dutchie432
Oct 17 '11 at 20:14
...
Weak and strong property setter attributes in Objective-C
...
You either have ARC on or off for a particular file. If its on you cannot use retain release autorelease etc... Instead you use strong weak for properties or __strong
__weak
for variables (defaults to __strong). Strong is the equivalent to retain, however ARC will man...
How can I get the MD5 fingerprint from Java's keytool, not only SHA-1?
...MD5 Certificate by adding -v option.
use the following code:-
C:\Program Files\Java\jdk1.7.0\bin>keytool -v -list -alias
androiddebugkey -keystore debug.keystore -storepass android -keypass android
it will output MD5 certificate as well.
...
Favicon dimensions? [duplicate]
...e iOS do not support non-square icons.
The favicon is supported by several files:
A favicon.ico icon.
Some other PNG icons.
In order to get the best results across desktop browsers (Windows/IE, MacOS/Safari, etc.), you need to combine both types of icons.
favicon.ico
Although all desktop browsers ...
How can I do a line break (line continuation) in Python?
...cit continuation, so backslashes are acceptable:
with open('/path/to/some/file/you/want/to/read') as file_1, \
open('/path/to/some/file/being/written', 'w') as file_2:
file_2.write(file_1.read())
Another such case is with assert statements.
Make sure to indent the continued l...