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Python: Why is functools.partial necessary?
...ly not all, because Guido and I assuredly are among those "familiar with" (etc) yet think of lambda as an eyesore anomaly in Python...
He was repentant of ever having accepted it into Python whereas planned to remove it from Python 3, as one of "Python's glitches".
I fully supported him in that. (I...
PHP报错：Only variables should be passed by reference - C/C++ - 清泛网 - 专注C/C++及内核技术
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解决办法 2 ：
或则如果这样配置的话： error_reporting = E_ALL | E_STRICT
PHP 报错
ActiveModel::ForbiddenAttributesError when creating new user
...
ActiveAdmin.register Api::V1::Person do
permit_params :name, :address, :etc
end
These need to be set along with those in the controller:
def api_v1_person_params
params.require(:api_v1_person).permit(:name, :address, :etc)
end
Otherwise you will get the error:
ActiveModel::ForbiddenAttrib...
Accessing MP3 metadata with Python [closed]
...etAlbum()
print tag.getTitle()
Read an mp3 file (track length, bitrate, etc.) and access it's tag:
if eyeD3.isMp3File(f):
audioFile = eyeD3.Mp3AudioFile(f)
tag = audioFile.getTag()
Specific tag versions can be selected:
tag.link("/some/file.mp3", eyeD3.ID3_V2)
tag.link("/some/file...
What is the bit size of long on 64-bit Windows?
... you call the 16-bit type? And if you call the 16-bit type char for UTF-16 etc, what do you call the 8-bit type? So, using LP64 leaves you with 8-bit char, 16-bit short, 32-bit int, 64-bit long, with room for upwards expansion to 128-bit long long when (if?) that becomes relevant. After that, you've...
Finding what methods a Python object has
... method, try:
help(object.method)
to see the pydocs, method signature, etc.
Ahh... REPL.
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Site does not exist error for a2ensite
I have cmsplus.dev under /etc/apache2/sites-available with the following code,
10 Answers
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Managing constructors with many parameters in Java
... .setZzz(myZzz)
// ... etc.
.build();
See page 8 and following of this Josh Bloch presentation (PDF), or this review of Effective Java
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Are there any standard exit status codes in Linux?
...tus 2 when called incorrectly (unknown options, wrong number of arguments, etc.) For example, diff -N, grep -Y or diff a b c will all result in $? being set to 2. This is and has been the practice since the early days of Unix in the 1970s.
The accepted answer explains what happens when a command i...
Algorithm for creating a school timetable
... classes split in sub-groups some of the time?, Is this a weekly schedule? etc.) there isn't a well known problem class which corresponds to all the scheduling problems. Maybe, the Knapsack problem has many elements of similarity with these problems at large.
A confirmation that this is both a har...