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In Jinja2, how do you test if a variable is undefined?
... is true if the variable is None.
Since not is None is not allowed, that means that
{% if variable != None %}
is really your only option.
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How to search DOM elements using XPath or CSS selectors in Chrome Developer Tools?
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@eeezyy you mean ctrl + f ?
– Box
Jan 5 '17 at 17:22
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ping response “Request timed out.” vs “Destination Host unreachable”
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What does it mean if you get a mix of both replies?
– user2924019
Nov 16 '16 at 15:56
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What does “./” (dot slash) refer to in terms of an HTML file path location?
I know ../ means go up a path, but what does ./ mean exactly?
10 Answers
10
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Can comments be used in JSON?
...se some desired (but missing) feature isn't explicitly disallowed, doesn't mean that your compiler will magically recognize it.
– stakx - no longer contributing
Sep 28 '15 at 7:01
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JS: Check if date is less than 1 hour ago?
...nds
Convert milliseconds into minutes
If minutes are less than 60, then it means date is within hour else not within hour.
var date = new Date("2020-07-12 11:30:10");
var now = new Date();
var diffInMS = now - date;
var msInHour = Math.floor(diffInMS/1000/60);
if (msInHour < 60) {
console.lo...
What does “connection reset by peer” mean?
What is the meaning of the "connection reset by peer" error on a TCP connection? Is it a fatal error or just a notification or related to the network failure?
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How to flatten only some dimensions of a numpy array
...eralization to Alexander's answer - np.reshape can take -1 as an argument, meaning "total array size divided by product of all other listed dimensions":
e.g. to flatten all but the last dimension:
>>> arr = numpy.zeros((50,100,25))
>>> new_arr = arr.reshape(-1, arr.shape[-1])
>...
Bash Script : what does #!/bin/bash mean? [duplicate]
In bash script, what does #!/bin/bash at the 1st line mean ?
3 Answers
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How do I get and set Environment variables in C#?
... environment variables automatically.
I didn't want that to happen...that means folders in the path such as '%SystemRoot%\system32' were being re-written as 'C:\Windows\system32'. To get the un-expanded path, I had to use this:
string keyName = @"SYSTEM\CurrentControlSet\Control\Session Manager\E...