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Enforcing the type of the indexed members of a Typescript object?
...ually confuse TypeScript and break type safety. For example, if you try to convert a { number: string } to a { string: number } by swapping keys with values, you actually end up with a { string: string } yet TypeScript doesn't throw any warnings/errors
– tep
Ma...
How can I access my localhost from my Android device?
...ated to:
ip a
If you still prefer to use ifconfig as part of your daily sys admin routine, you can easily install it as part of the net-tools package.
apt-get install net-tools
Reference is here
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Replacing Pandas or Numpy Nan with a None to use with MysqlDB
... out an error saying nan is not in the field list. I need to find a way to convert the 'nan' into a NoneType.
7 Answers
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Downloading a Google font and setting up an offline site that uses it
...u downloaded (.ttf should be extracted)
Go to "http://ttf2woff.com/" and convert any .ttf extracted from zip to .woff
Edit desiredfontname.css and replace any url within it [between 'url(' and ')'] with the corresponding converted .woff file you got on ttf2woff.com; path you write should be acco...
FFmpeg on Android
...
do u know, how can i convert 3gp to audio, using JNI implementation
– Mr.G
Dec 4 '13 at 5:41
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Difference between Covariance & Contra-variance
...nk about the logical reasons that underly these relationships. Why can we convert IEnumerable<Tiger> to IEnumerable<Animal> safely? Because there is no way to input a giraffe into IEnumerable<Animal>. Why can we convert an IComparable<Animal> to IComparable<Tiger>? ...
Deserialize json object into dynamic object using Json.net
...est]
public void DynamicDeserialization()
{
dynamic jsonResponse = JsonConvert.DeserializeObject("{\"message\":\"Hi\"}");
jsonResponse.Works = true;
Console.WriteLine(jsonResponse.message); // Hi
Console.WriteLine(jsonResponse.Works); // True
Console.WriteLine(JsonConvert.Seriali...
sqlite database default time value 'now'
... the timestamp (created_at-column) is saved as unix epoch UTC timezone and converted to local timezone only when necessary.
Using unix epoch saves storage space - 4 bytes integer vs. 24 bytes string when stored as ISO8601 string, see datatypes. If 4 bytes is not enough that can be increased to 6 or...
What is the !! (not not) operator in JavaScript?
...
Converts Object to boolean. If it was falsey (e.g. 0, null, undefined, etc.), it will be false, otherwise, true.
!oObject // inverted boolean
!!oObject // non inverted boolean so true boolean representation
So !! is not a...
upstream sent too big header while reading response header from upstream
... message: PHP Notice: Undefined index: Firstname in /srv/www/classes/data_convert.php on line 1090
PHP message: PHP Notice: Undefined index: Lastname in /srv/www/classes/data_convert.php on line 1090
... // 20 lines of same
PHP message: PHP Notice: Undefined index: Firstname in /srv/www/classes/d...