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'is' versus try cast with null check
... below the belt. Take a look at this example:
object o = "test";
if (o is string)
{
var x = (string) o;
}
This translates to the following IL:
IL_0000: nop
IL_0001: ldstr "test"
IL_0006: stloc.0 // o
IL_0007: ldloc.0 // o
IL_0008: isinst System.String
IL_000D...
Rename Pandas DataFrame Index
...from a DataFrame, this attribute is set to the column name.
We can pass a string name to the rename method to change it
s.rename('FOOOOOD')
state color
Jane NY blue Steak
Nick TX green Lamb
Aaron FL red Mango
Name: FOOOOOD, dtype: object
DataFrames do not h...
Error in strings.xml file in Android
I have declared a long string in string.xml of an application.
9 Answers
9
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What does %w(array) mean?
... shortcut for ["foo", "bar"]. Meaning it's a notation to write an array of strings separated by spaces instead of commas and without quotes around them. You can find a list of ways of writing literals in zenspider's quickref.
...
difference and when to use getApplication(), getApplicationContext(), getBaseContext() and someClass
...
@committedandroider because activity context contains extra info for the chosen theme, so when views are created in code then the correct theme will be applied automatically. For more info, you may read this
– waqaslam
Nov 30 '14 at 6:51
...
Performance of static methods vs instance methods
... you mean that if above sample method takes parameter as object instead of string, non-static is better? for example: I have my static method takes object as parameter and serializes it into string and returns string. are you suggesting to use non-static in this case?
– batmaci...
Make git automatically remove trailing whitespace before committing
...ave you in a weird state. I borrowed from this question and just added an extra case before the if: fixws = !"\ if test -d $(git rev-parse --git-dir)/rebase-merge ; then \ echo 'In rebase - cannot fixws' ; \ elif (! git diff-files --quiet .) && \ (! git diff-index --quiet ...
Stash just a single file
...later simply rebase and/or merge the tmpbranch. It really isn't that much extra work when you need to do more careful tracking than stash will allow.
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decorators in the python standard lib (@deprecated specifically)
...tional "reason" message.
import functools
import inspect
import warnings
string_types = (type(b''), type(u''))
def deprecated(reason):
"""
This is a decorator which can be used to mark functions
as deprecated. It will result in a warning being emitted
when the function is used.
...
RequestDispatcher.forward() vs HttpServletResponse.sendRedirect()
...cted address. It’s not transparent.
sendRedirect is slower because one extra round trip is required, because a completely new request is created and the old request object is lost. Two browser request are required.
But in sendRedirect, if we want to use the same data for a new resource we have...