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How can I remove duplicate rows?
...hers; I'm a newbie to SQL just trying to learn. More importantly than why does it work: what is the difference between including the name of the table there or not?
– levininja
Nov 6 '13 at 20:28
...
On design patterns: When should I use the singleton?
...me.
Logging is a specific example of an "acceptable" Singleton because it doesn't affect the execution of your code. Disable logging, code execution remains the same. Enable it, same same. Misko puts it in the following way in Root Cause of Singletons, "The information here flows one way: From your...
How do I convert a float number to a whole number in JavaScript?
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Does not work with exact precision for values like 2.3 - 2.3 % 1
– Lapys
Nov 6 '18 at 23:31
add a co...
REST API Login Pattern
...ral. With some authentication schemes, there's no traditional login.
REST does not dictate any security rules, but the most common implementation in practice is OAuth with 3-way authentication (as you've mentioned in your question). There is no log-in per se, at least not with each API request. Wit...
Invoke-WebRequest, POST with parameters
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Single command without ps variables when using JSON as body {lastName:"doe"} for POST api call:
Invoke-WebRequest -Headers @{"Authorization" = "Bearer N-1234ulmMGhsDsCAEAzmo1tChSsq323sIkk4Zq9"} `
-Method POST `
-Body (@{"lastName"="doe";}|ConvertTo-Json) `
...
Vagrant error : Failed to mount folders in Linux guest
...ebruary 2016
This took me hours to solve independently. Yes, this problem does still exist with latest Vagrant and Virtual Box installs:
△ vagrant -v
Vagrant 1.8.1
△ vboxmanage -v
5.0.14r105127
The symptoms for me were messages something like:
Checking for guest additions in VM... The gu...
What are the drawbacks of Stackless Python? [closed]
...ried to measure those performance numbers. I can't think of what Stackless does to make a difference that big.
Stackless is an amazing tool with several organizational/political problems.
The first comes from history. Christian Tismer started talking about what eventually became Stackless about 10...
Is it possible to use “/” in a filename?
...dfd, const char __user *, newname)
When the system call gets invoked, it does a path lookup (do_path_lookup) on the name. Keep tracing this, and we get to link_path_walk which has this:
static int link_path_walk(const char *name, struct nameidata *nd)
{
struct path next;
int err;
...
JavaScript curry: what are the practical applications?
I don’t think I’ve grokked currying yet. I understand what it does, and how to do it. I just can’t think of a situation I would use it.
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Declare a const array
...erface, which, despite the similarity in name to class ReadOnlyCollection, does not even support indexed access, making it fundamentally unsuitable for providing array-like access.)
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