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DROP IF EXISTS VS DROP?
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Just thought I'd mention that it would be a really good idea for one to use CASCADE within a transaction block (BEGIN ... COMMIT). This way it is clear how the database will be affected before potentially clobbering a bunch of data you may not have wanted to.
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Add querystring parameters to link_to
...ht. the new syntax is ` <%= link_to "Create Note", new_note_path(sender_id: @user.id) %>`
– gsumk
Sep 12 '19 at 22:09
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Java Constructor Inheritance
...ed constructor to inherit the parameters of a base constructor and automatically forward these to the base constructor so that the derived constructor need not repeat these parameters.
– Derek Mahar
Mar 27 '11 at 15:01
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Why isn't there a Guid.IsNullOrEmpty() method
This keeps me wondering why Guid in .NET does not have IsNullOrEmpty() method (where empty means all zeros)
6 Answers
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What is referential transparency?
...other words, it is the closest subject outside computer science to what we call programming language semantics. The philosopher Willard Quine was responsible for initiating the concept of referential transparency, but it was also implicit in the approaches of Bertrand Russell and Alfred Whitehead.
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How to catch an Exception from a thread
...st you read more about how threading works, but to quickly summarize: your call to start starts up a different thread, totally unrelated to your main thread. The call to join simply waits for it to be done. An exception that is thrown in a thread and never caught terminates it, which is why join ret...
Making a request to a RESTful API using python
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Using requests and json makes it simple.
Call the API
Assuming the API returns a JSON, parse the JSON object into a
Python dict using json.loads function
Loop through the dict to extract information.
Requests module provides you useful function to loop for success...
How to install latest (untagged) state of a repo using bower?
... also just use <git-url>#<branch-name> instead of adding a SHA-ID. So you can also use <git-url>#master to track the master branch.
– MKroehnert
Nov 2 '13 at 8:44
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What happens when a computer program runs?
...from 0 and going to 1k, contained
| vector | the addresses of routines called when interrupts occurred. e.g.
| table | interrupt 0x21 checked the address at 0x21*4 and far-jumped to that
| | location to service the interrupt.
+-----------+ 0x0
You can see that DOS allowed direc...
Use of *args and **kwargs [duplicate]
...rgs must occur before **kwargs.
You can also use the * and ** syntax when calling a function. For example:
>>> def print_three_things(a, b, c):
... print( 'a = {0}, b = {1}, c = {2}'.format(a,b,c))
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>>> mylist = ['aardvark', 'baboon', 'cat']
>>> print_three_thing...