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Do I need dependency injection in NodeJS, or how to deal with …?
...ter name)
var db = require('whichever_db_vendor_i_use');
module.exports.fetchConnection() = function() {
//logic to test connection
//do I want to connection pool?
//do I need only one connection throughout the lifecyle of my application?
return db.createConnection(port, host, d...
What integer hash function are good that accepts an integer hash key?
...tegers that are divisible by a common factor (word-aligned memory adresses etc.). Now if your hash table happens to be divisible by the same factor, you end up with only half (or 1/4, 1/8, etc.) buckets used.
– Rafał Dowgird
Mar 20 '09 at 16:56
...
Is there a replacement for unistd.h for Windows (Visual C)?
...for getpid() and the exec..() family */
#include <direct.h> /* for _getcwd() and _chdir() */
#define srandom srand
#define random rand
/* Values for the second argument to access.
These may be OR'd together. */
#define R_OK 4 /* Test for read permission. */
#define W_OK 2 ...
【研究中】高德地图API研究及接入 - App应用开发 - 清泛IT社区，为创新赋能！
...0003,39.991957&key=<用户的key>&radius=1000&extensions=all
路径规划：https://lbs.amap.com/api/webservice/guide/api/direction
路径规划2.0：https://lbs.amap.com/api/webservice/guide/api/newroute
高德地图支持XYZ格式。XYZ格式是一种瓦片地图服务，...
What are best practices for multi-language database design? [closed]
...t.
E.g. the first table contains only language-neutral data (primary key, etc.) and the second table contains one record per language, containing the localized data plus the ISO code of the language.
In some cases we add a DefaultLanguage field, so that we can fall-back to that language if no loca...
Add a prefix to all Flask routes
...un this application inside of a WSGI container (mod_wsgi, uwsgi, gunicorn, etc); you need to actually mount, at that prefix the application as a sub-part of that WSGI container (anything that speaks WSGI will do) and to set your APPLICATION_ROOT config value to your prefix:
app.config["APPLICATION_...
What is a None value?
...es have similar concepts. SQL has NULL; JavaScript has undefined and null, etc.
Note that in Python, variables exist by virtue of being used. You don't need to declare a variable first, so there are no really empty variables in Python. Setting a variable to None is then not the same thing as settin...
Can you grab or delete between parentheses in vi/vim?
...aces, parens, C-style comments and various precompiler statements (#ifdef, etc.).
There is a plugin for "extended % matching" that you can find on the Vim homepage.
You can read the documentation on % and related motion commands by entering :help various-motions in command mode.
object-select
Th...
MVC (Laravel) where to add logic
...return data and this is not the place to put validations, call db methods, etc..
Models: Is this a good place to add logic like sending an welcome email when a user registers or update the vote count of a post? What if you need to send the same email from another place in your code? Do you create ...
Label Alignment in iOS 6 - UITextAlignment deprecated
...gnmentCenter;
And this:
label.lineBreakMode = kLabelTruncationMiddle;
Etc.
Since these UIText/NSText changes are likely to be popping up for multiple controls, this approach is quite handy.
(Caveat: Being a member of the aforementioned steady-earth lovers, I have tested this with an old vers...