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Showing the stack trace from a running Python application
...tion at some point when your program starts up (You could even stick it in site.py to have all python programs use it), and let it run. At any point, send the process a SIGUSR1 signal, using kill, or in python:
os.kill(pid, signal.SIGUSR1)
This will cause the program to break to a python con...
How would I run an async Task method synchronously?
...
Yep. Going the opposite direction, though, as in Task<MyResult> task = Task.Run(async () => await DoSomethingAsync()); is more explicit and addresses the concern by @sgnsajgon that it might be returning a Task<Task<MyResult&g...
How to extract epoch from LocalDate and LocalDateTime?
...because I want all calculations be normalized to it. Also, how do I do the opposite: convert from epoch time to LocalDate/LocalDateTime (also without ZoneId, or with the GMT one) ?
– android developer
Jan 11 '18 at 10:06
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Best dynamic JavaScript/JQuery Grid [closed]
...y data source
DOM, Javascript array, Ajax file and server-side processing (PHP, C#,
Perl, Ruby, AIR, Gears etc)
Scrolling options for table viewport
Fully internationalisable
jQuery UI ThemeRoller support
Rock solid - backed by a suite of 2600+ unit tests
Wide variety of plug-ins inc. TableTools, Fi...
Javascript: formatting a rounded number to N decimals
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PHP-Like rounding Method
The code below can be used to add your own version of Math.round to your own namespace which takes a precision parameter. Unlike Decimal rounding in the example above, this performs no conversion to ...
How to open a specific port such as 9090 in Google Compute Engine
...not sure if they changed the api but the source and target seems to be the opposite than @modulitos's answer. According to the firewall-rules command documentation, source means incoming traffic whereas target refers to the instances to apply the rule to.
– cindyxiaoxiaoli
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Pros and Cons of Interface constants [closed]
PHP interfaces allow the definition of constants in an interface, e.g.
2 Answers
2
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Checking if a field contains a string
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https://docs.mongodb.com/manual/reference/sql-comparison/
http://php.net/manual/en/mongo.sqltomongo.php
MySQL
SELECT * FROM users WHERE username LIKE "%Son%"
MongoDB
db.users.find({username:/Son/})
share
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Difference between single quotes and double quotes in Javascript [duplicate]
I know that in PHP, the only difference between double quotes and single quotes is the interpretation of variable inside a string and the treatment of escape characters.
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Delete element in a slice
...s many arguments as you want).
Now, when calling a function, ... does the opposite: it unpacks a slice and passes them as separate arguments to a variadic function.
So what this line does:
a = append(a[:0], a[1:]...)
is essentially:
a = append(a[:0], a[1], a[2])
Now, you may be wondering, wh...