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Get file size, image width and height before upload
...ileReader API
In case you need images sources as long Base64 encoded data strings
<img src="data:image/png;base64,iVBORw0KGg... ...lF/++TkSuQmCC=">
const EL_browse = document.getElementById('browse');
const EL_preview = document.getElementById('preview');
const readImage = file ...
How to get JSON objects value if its name contains dots?
... field you can access using the . operator, you can access using [] with a string version of the field name.
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How can I do division with variables in a Linux shell?
...tor in case statements than it can't resolve it.
In that case use simple strings like div or devide or something else.
See the code
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PostgreSQL create table if not exists
...d to use the exact same spelling. If you don't, you need to use lower-case strings. See:
Are PostgreSQL column names case-sensitive?
pg_tables only contains actual tables. The identifier may still be occupied by related objects. See:
How to check if a table exists in a given schema
If the role e...
RecyclerView onClick
...) {
int itemPosition = mRecyclerView.getChildLayoutPosition(view);
String item = mList.get(itemPosition);
Toast.makeText(mContext, item, Toast.LENGTH_LONG).show();
}
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Using Moq to determine if a method is called
...g you have mocked has been called by using Verify, e.g.:
static void Main(string[] args)
{
Mock<ITest> mock = new Mock<ITest>();
ClassBeingTested testedClass = new ClassBeingTested();
testedClass.WorkMethod(mock.Object);
mock.Verify(m => m.MethodToCh...
Python requests - print entire http request (raw)?
...quests_toolbelt library, which can dump out both requests and responses as strings for you to print to the console. It handles all the tricky cases with files and encodings which the above solution does not handle well.
It's as easy as this:
import requests
from requests_toolbelt.utils import dump...
Explanation of JSONB introduced by PostgreSQL
... spec).
F.ex. these are valid JSON representations: null, true, [1,false,"string",{"foo":"bar"}], {"foo":"bar","baz":[null]} - hstore is just a little subset compared to what JSON is capable (but if you only need this subset, it's fine).
The only difference between json & jsonb is their storag...
Configuring Vim for C++
...or example :
abbreviate bptr boost::shared_ptr
abbreviate cstr const std::string &
I have several functions for "code snippets" like things, for example :
function! IncludeGuard()
let basename = expand("%:t:r")
let includeGuard = '__' . basename . '_h__'
call append(0, "#ifndef " . incl...
Microsoft Excel mangles Diacritics in .csv files?
...xcel CSV
* @param array $header
* @param array $data
* @param string $filename
*/
function toCSV($header, $data, $filename) {
$sep = "\t";
$eol = "\n";
$csv = count($header) ? '"'. implode('"'.$sep.'"', $header).'"'.$eol : '';
foreach($data as $line) {
$c...