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How to avoid reinstalling packages when building Docker image for Python projects?
...r requirements.txt
ADD . /srv
RUN python setup.py install
ENTRYPOINT ["run_server"]
Docker will use cache during pip install as long as you do not make any changes to the requirements.txt, irrespective of the fact whether other code files at . were changed or not. Here's an example.
Here's a simp...
What’s the difference between ScalaTest and Scala Specs unit test frameworks?
...o navigate, I provide a decision tree here:
http://www.scalatest.org/quick_start
The matcher syntax is also different between ScalaTest and specs. In ScalaTest I tried to see how far I could go with operator notation, and ended up with matcher expressions that read very much like English sentences...
What is the difference between a thread and a fiber?
...ing it better than I probably did are:
http://en.wikipedia.org/wiki/Fiber_(computer_science)
http://en.wikipedia.org/wiki/Computer_multitasking#Cooperative_multitasking.2Ftime-sharing
http://en.wikipedia.org/wiki/Pre-emptive_multitasking
...
Is it .yaml or .yml?
...
Wikipedia's Category:Filename_extensions page lists entries for .a, .o and .z. Somehow, it missed .c and .h. These single-letter extensions help us see that extensions should be as long as necessary, but no longer (to half-quote A. Einstein).
...
How to get first and last day of previous month (with timestamp) in SQL Server
...tional date standard, follow this link:
https://en.wikipedia.org/wiki/ISO_8601
For further reading on the ODBC international date standard, follow this link:
https://technet.microsoft.com/en-us/library/ms190234(v=sql.90).aspx
To view the list of date formats I worked from, follow this link:
...
How to change the output color of echo in Linux
...are as follows:
Num Colour #define R G B
0 black COLOR_BLACK 0,0,0
1 red COLOR_RED 1,0,0
2 green COLOR_GREEN 0,1,0
3 yellow COLOR_YELLOW 1,1,0
4 blue COLOR_BLUE 0,0,1
5 magenta COLOR_MAGENTA 1,0,1
6 cyan COLOR_CY...
What's the difference between deadlock and livelock?
... is a great video demonstrating deadlock and livelock: youtube.com/watch?v=_IxsOEEzf-c
– BlackVegetable
Apr 18 '15 at 22:25
|
show 4 more co...
C++ unordered_map using a custom class type as the key
I am trying to use a custom class as key for an unordered_map , like the following:
3 Answers
...
What is “callback hell” and how and why does RX solve it?
...de looks like this ( Scala.js ) :
def render: Unit => VdomElement = { _ =>
<.div(
<.hr,
<.h2("Note Selector"),
<.hr,
<.br,
noteSelectorTable.comp(),
NoteCreatorWidget().createNewNoteButton.comp(),
NoteEditorWidget(selectedNote.updates()).comp(),
...
how to listen to N channels? (dynamic select statement)
...o a shared "aggregate" channel. For example:
agg := make(chan string)
for _, ch := range chans {
go func(c chan string) {
for msg := range c {
agg <- msg
}
}(ch)
}
select {
case msg <- agg:
fmt.Println("received ", msg)
}
If you need to know which channel the message ...