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What are naming conventions for MongoDB?
...o name a collection few precautions to be taken :
A collection with empty string (“”) is not a valid collection name.
A collection name should not contain the null character because this defines the end of collection name.
Collection name should not start with the prefix “system.” as this i...
Tool to generate JSON schema from JSON data [closed]
...It is an online tool that can automatically generate JSON schema from JSON string. And you can edit the schema easily.
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Leaflet - How to find existing markers, and delete markers?
...ar marker = new Array();
/*Some Coordinates (here simulating somehow json string)*/
var items = [{"lat":"51.000","lon":"13.000"},{"lat":"52.000","lon":"13.010"},{"lat":"52.000","lon":"13.020"}];
/*pushing items into array each by each and then add markers*/
function itemWrap() {
for(i=0;i<items...
Get current time as formatted string in Go?
What's the best way to get the current timestamp in Go and convert to string? I need both date and time in eg. YYYYMMDDhhmmss format.
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Do I have to guard against SQL injection if I used a dropdown?
...less, you must use Prepared Statements (recommended) or mysqli_real_escape_string. Also properly escape the values when outputting them (e.g. use htmlspecialchars() in a HTML document).
– ComFreek
Mar 20 '14 at 18:12
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How to Batch Rename Files in a macOS Terminal?
..."${f/_*_/_}" is an application of bash parameter expansion: the (first) substring matching pattern _*_ is replaced with literal _, effectively cutting the middle token from the name.
Note that _*_ is a pattern (a wildcard expression, as also used for globbing), not a regular expression (to learn abo...
Detect if device is iOS
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Detecting iOS
With iOS 13 iPad both User agent and platform strings are changed and differentiating between iPad and MacOS seems possible, so all answers below needs to take that into account now.
This might be the shortest alternative that also covers iOS 13:
function iOS() {
retur...
Print a string as hex bytes?
I have this string: Hello world !! and I want to print it using Python as 48:65:6c:6c:6f:20:77:6f:72:6c:64:20:21:21 .
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Pickle or json?
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The benchmark cited by @mac only tests strings. I tested str, int and float seperately and found out that json is slower than cPickle with float serialization, but faster with float unserialization. For int (and str), json is faster both ways. Data and code: gist....
How to check whether a string is Base64 encoded or not
I want to decode a Base64 encoded string, then store it in my database. If the input is not Base64 encoded, I need to throw an error.
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