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Relationship between hashCode and equals method in Java [duplicate]
...istinct integers for distinct objects. (This is typically implemented by
converting the internal address of the object into an integer, but this implementation
technique is not required by the JavaTM programming language.)
However some time you want the hash code to be the same for different o...
pip install from git repo branch
...ackage is apache-airflow) to work with an unreleased version. I'd like to convert the call pip install apache-airflow[crypto, slack] to install these extras with the archive version. I tried pip install https://github.com/apache/incubator-airflow/archive/master.zip[crypto, slack] but this breaks t...
Project management to go with GitHub [closed]
...outdated for my particular issue, as Google Code supports git now and I've converted Protocol Buffers to Mercurial anyway. However, it's still of general interest, IMO.)
...
std::cin input with spaces?
...(and tweak accordingly for multi-word input), or use getline and lexically convert to int after-the-fact.
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Which terminal command to get just IP address and nothing else?
...er some scenarios (i.e. a VPN link is up), so a more reliable way would be converting the result to an array and then loop over the elements:
ips=($(hostname -I))
for ip in "${ips[@]}"
do
echo $ip
done
OSX
On OSX, if you know the interface, you could use:
~$ ipconfig getifaddr en0
192.168....
How can I escape square brackets in a LIKE clause?
...or the characters % and _.
Here's a good article with some more examples
SELECT columns FROM table WHERE
column LIKE '%[[]SQL Server Driver]%'
-- or
SELECT columns FROM table WHERE
column LIKE '%\[SQL Server Driver]%' ESCAPE '\'
...
Pass array to mvc Action via AJAX
... you just need to stringify your values. The JSONValueProvider in MVC will convert that back into an IEnumerable for you.
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Best way to handle list.index(might-not-exist) in python?
...? :
li = [1,2,3,4,5] # create list
li = dict(zip(li,range(len(li)))) # convert List To Dict
print( li ) # {1: 0, 2: 1, 3: 2, 4:3 , 5: 4}
li.get(20) # None
li.get(1) # 0
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Determine if map contains a value for a key?
... the map for a keyvalue that is '2'. IIRC the C++ compiler will implicitly convert '2' to an int, which results in the numeric value for the ASCII code for '2' which is not what you want.
Since your keytype in this example is int you want to search like this: m.find(2);
...
How to handle ListView click in Android
... Thanks David. Geezzz, I tried setOnClickListener and setOnItemSelectedListener but missed reading setOnItemClickListener. Thanks, Tee
– teepusink
Mar 18 '10 at 8:37
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