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Read file from line 2 or skip header row
...he header information (in this example we simply tokenize the header lines based on the comma and return it as a list but there's room to do much more).
def __readheader(filehandle, numberheaderlines=1):
"""Reads the specified number of lines and returns the comma-delimited
strings on eac...
Adding a Method to an Existing Object Instance
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My comment was based on this reference: python-reference.readthedocs.io/en/latest/docs/dunderdsc/… What I now see from official docs, it's optional: docs.python.org/3/howto/descriptor.html#descriptor-protocol
– Aida...
How to create a self-signed certificate for a domain name for development?
...et 2.0 SDK. On my server it's at:
C:\Program Files\Microsoft.Net\SDK\v2.0 64bit\Bin\makecert.exe
You can create a signing authority and store it in the LocalMachine certificates repository as follows (these commands must be run from an Administrator account or within an elevated command prompt):
...
What exactly is a C pointer if not a memory address?
... emulate a 32-bit machine on a physical 16-bit machine and you extend your 64KB of RAM to up to 4GB by using disk storage and implement 32-bit pointers as offsets into a huge file. Those pointers aren't real memory addresses.
– Alexey Frunze
Mar 1 '13 at 9:20
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How to get the original value of an attribute in Rails
...ue that an ActiveRecord attribute (=the value that was loaded from the database)?
4 Answers
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How do I clear a search box with an 'x' in bootstrap 3?
...s intent was to pass a truthy paramter to hide() to start off hidden/shown based on if the input has a value already. If that was the intent, he failed (hide always hides). It should be $(".clearer").toggle(!!$(this).prev('input').val());
– Jeff Shepler
Jun 10 ...
Using Eloquent ORM in Laravel to perform search of database using LIKE
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If you need to frequently use LIKE, you can simplify the problem a bit. A custom method like ()...
Can I query MongoDB ObjectId by date?
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Popping Timestamps into ObjectIds covers queries based on dates embedded in the ObjectId in great detail.
Briefly in JavaScript code:
/* This function returns an ObjectId embedded with a given datetime */
/* Accepts both Date object and string input */
function objectIdWit...
How to correctly implement custom iterators and const_iterators?
...ype of iterator which fits your container: input, output, forward etc.
Use base iterator classes from standard library. For example, std::iterator with random_access_iterator_tag.These base classes define all type definitions required by STL and do other work.
To avoid code duplication iterator clas...
记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...解决：
MongoDB按需自动生成数据文件：先是<DB>.0，大小是64M，然后是<DB>.1，大小翻番到128M，到了<DB>.5，大小翻番到2G，其后的数据文件就保持在2G大小。为了避免可能出现的问题，可以采用事先手动创建数据文件的策略：
#!/bin...