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How do I get the MIN() of two fields in Postgres?
...` expression` is any numeric, string, date/time, network, or enum type, or arrays of these types
– charlesdg
Jan 11 '19 at 10:05
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Learning WebGL and three.js [closed]
...his awesome open-gl tutorial. You don't have to set up the matrices, typed arrays, because three already sets it up for you, updating them when needed. The shader though, you can write from scratch - a simple color rendering would be two lines of GLSL. There is also a post processing plug-in for thr...
How to know the size of the string in bytes?
...ject takes, rather than just the number of bytes in its internal character array, then you might consider a more general method.
– Bob
Jul 2 '14 at 2:25
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How to delete or add column in SQLITE?
...anymore from the table's list of columns
updatedTableColumns.removeAll(Arrays.asList(colsToRemove));
String columnsSeperated = TextUtils.join(",", updatedTableColumns);
db.execSQL("ALTER TABLE " + tableName + " RENAME TO " + tableName + "_old;");
// Creating the table on its new f...
Batch files - number of command line arguments
...Have tested this out to 2500 arguments as a function and used it to define arrays of same size. Dont ask me why exactly. Mostly just learning what batch is capable of.
– T3RR0R
Jan 4 at 12:56
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Reading specific lines only
... file into memory. You might as well call file.read().split('\n') then use array index lookups to get the line of interest...
– duhaime
Jun 4 '18 at 14:28
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Disable cache for some images
...ers change.
To solve this problem, I needed to hash $_GET but since it is array here is the solution:
$chart_hash = md5(implode('-', $_GET));
echo "<img src='/images/mychart.png?hash=$chart_hash'>";
Edit:
Although the above solution works just fine, sometimes you want to serve the cached ...
matplotlib colorbar for scatter
...
From the matplotlib docs on scatter 1:
cmap is only used if c is an array of floats
So colorlist needs to be a list of floats rather than a list of tuples as you have it now.
plt.colorbar() wants a mappable object, like the CircleCollection that plt.scatter() returns.
vmin and vmax can then...
Difference of keywords 'typename' and 'class' in templates?
...template that should accept any type as T, including built-ins (such as an array )
template<typename T>
class Foo { ... }
For a template that will only work where T is a real class.
template<class T>
class Foo { ... }
But keep in mind that this is purely a style thing some people u...
How to enable cross-origin resource sharing (CORS) in the express.js framework on node.js
...this code in your index.js or server.js file and change the allowed origin array according to your requirement.
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