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Unique fields that allow nulls in Django
...nothing to actually protect data integrity. Data may be entered via import scripts, from the shell, through an API or any other means. Much better to override the save() method than to make custom cases for every form that might touch the data.
– shacker
Jul 27...
Is it pythonic to import inside functions?
...bout loading the module twice - Why not both?
An import at the top of the script will indicate the dependencies and another import in the function with make this function more atomic, while seemingly not causing any performance disadvantage, since a consecutive import is cheap.
...
Keeping ASP.NET Session Open / Alive
... JSON serialized object if some data should be returned to the calling JavaScript.
Made available through web.config:
<httpHandlers>
<add verb="GET,HEAD" path="SessionHeartbeat.ashx" validate="false" type="SessionHeartbeatHttpHandler"/>
</httpHandlers>
added from balexand...
Why do we need RESTful Web Services?
...
community wiki
2 revs, 2 users 51%Rajarajan Pudupatti Sundari J
...
R - Markdown avoiding package loading messages
...=FALSE to exclude everything in a chunk.
```{r include=FALSE}
source("C:/Rscripts/source.R")
```
If you only want to suppress messages, use message=FALSE instead:
```{r message=FALSE}
source("C:/Rscripts/source.R")
```
...
nodeJs callbacks simple example
...forming its asynchronous task.
The simplest example I can think of in JavaScript is the setTimeout() function. It's a global function that accepts two arguments. The first argument is the callback function and the second argument is a delay in milliseconds. The function is designed to wait the appr...
Why isn't `int pow(int base, int exponent)` in the standard C++ libraries?
...he only real difference between implementing a power function for integers vs floats.
– numbermaniac
Nov 30 '19 at 14:15
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How to encrypt String in Java
... all over StackOverflow and online in tutorials and examples.
Nonces and IVs
In response to the issue found with ECB mode nounces also known as IVs were created. The idea is that we generate a new random variable and attach it to every encryption so that when you encrypt two messages that are the ...
How can I reliably determine the type of a variable that is declared using var at design time?
...ariable in more or less the same way as the compiler will. If you use the VS Intellisense, you may notice that it won't give you the type of var until you've finished entering a valid (resolvable) assignment expression. If the expression is still ambiguous (for instance, it can't fully infer the g...
Renaming or copying files and folder using NERDTree on Vim. Is it possible?
... simulate the "right click" menus
that most file explorers have. The
script comes with two default menu
plugins: exec_menuitem.vim and
fs_menu.vim. fs_menu.vim adds some
basic filesystem operations to the
menu for
creating/deleting/moving/copying files
and dirs. exec_menuitem.vim p...