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Object of custom type as dictionary key
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You need to add 2 methods, note __hash__ and __eq__:
class MyThing:
def __init__(self,name,location,length):
self.name = name
self.location = location
self.length = length
def __hash__(self):
return hash((self.name, self.lo...
Assign output of a program to a variable using a MS batch file
...et VAR=%%i
Note that the first % in %%i is used to escape the % after it and is needed when using the above code in a batch file rather than on the command line. Imagine, your test.bat has something like:
for /f %%i in ('c:\cygwin64\bin\date.exe +"%%Y%%m%%d%%H%%M%%S"') do set datetime=%%i
echo %d...
How do I remove a file from the FileList
I'm building a drag-and-drop-to-upload web application using HTML5, and I'm dropping the files onto a div and of course fetching the dataTransfer object, which gives me the FileList .
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Possible to access the index in a Hash each loop?
...me thing as (key,value) = arr, putting the first value (the key) into key, and the second into value.
– rampion
Jan 18 '10 at 2:45
1
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How can I convert string to datetime with format specification in JavaScript?
...ave to parse the string yourself (should be easy with regular expressions) and create a new Date object with explicit values for year, month, date, hour, minute and second.
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Looping through the content of a file in Bash
... effects of trimming leading whitespace, interpreting backslash sequences, and skipping the last line if it's missing a terminating linefeed. If these are concerns, you can do:
while IFS="" read -r p || [ -n "$p" ]
do
printf '%s\n' "$p"
done < peptides.txt
Exceptionally, if the loop body m...
Simple example of threading in C++
...sk1 says: " << msg;
}
int main()
{
// Constructs the new thread and runs it. Does not block execution.
thread t1(task1, "Hello");
// Do other things...
// Makes the main thread wait for the new thread to finish execution, therefore blocks its own execution.
t1.join();
}
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Gradle - getting the latest release version of a dependency
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Gradle currently does not support Maven's RELEASE (which is rarely used and deprecated) but it does support Ivy's latest.release. However, the general recommendation is to build against exact versions. Otherwise, the build can become a lottery.
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How do I convert a Vector of bytes (u8) to a string
I am trying to write simple TCP/IP client in Rust and I need to print out the buffer I got from the server.
3 Answers
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Windows can't find the file on subprocess.call()
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When the command is a shell built-in, add a 'shell=True' to the call.
E.g. for dir you would type:
import subprocess
subprocess.call('dir', shell=True)
To quote from the documentation:
The only time you need to specify shell=True ...