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Reading settings from app.config or web.config in .NET
I'm working on a C# class library that needs to be able to read settings from the web.config or app.config file (depending on whether the DLL is referenced from an ASP.NET web application or a Windows Forms application).
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Error Code: 2013. Lost connection to MySQL server during query
...or me it was under Edit → Preferences → SQL Editor → DBMS connection read time out (in seconds): 600
Changed the value to 6000.
Also unchecked limit rows as putting a limit in every time I want to search the whole data set gets tiresome.
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Check if object is file-like in Python
...e objects are objects in Python that behave like a real file, e.g. have a read() and a write method(), but have a different implementation. It is and realization of the Duck Typing concept.
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Split output of command by columns using Bash?
... Linux you could simply do xargs -0n1 </proc/$PID/cmdline | head -n1 or readlink /proc/$PID/exe, but anyhow...
– ephemient
Oct 27 '09 at 16:09
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Generating an MD5 checksum of a file
...on't be able to fit the whole file in memory. In that case, you'll have to read chunks of 4096 bytes sequentially and feed them to the md5 method:
import hashlib
def md5(fname):
hash_md5 = hashlib.md5()
with open(fname, "rb") as f:
for chunk in iter(lambda: f.read(4096), b""):
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How do I read image data from a URL in Python?
...ks for that now and does the BytesIO wrapping under the hood. From: pillow.readthedocs.io/en/3.0.x/releasenotes/2.8.0.html
– Vinícius M
Feb 6 at 15:21
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How to kill a child process after a given timeout in Bash?
...ut (sudo apt-get install timeout) and use it like: (most Systems have it already installed otherwise use sudo apt-get install coreutils)
timeout 10 ping www.goooooogle.com
If you don't want to download something, do what timeout does internally:
( cmdpid=$BASHPID; (sleep 10; kill $cmdpid) & ...
mongodb, replicates and error: { “$err” : “not master and slaveOk=false”, “code” : 13435 }
... to set "slave okay" mode to let the mongo shell know that you're allowing reads from a secondary. This is to protect you and your applications from performing eventually consistent reads by accident. You can do this in the shell with:
rs.slaveOk()
After that you can query normally from secondari...
How to “comment-out” (add comment) in a batch/cmd?
...ch files are a relic of times long gone, they're clunky and ugly.
You can read more on this website.
EDIT: modified the example a bit to have it contain the elements you are apparently looking for.
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'const int' vs. 'int const' as function parameters in C++ and C
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The trick is to read the declaration backwards (right-to-left):
const int a = 1; // read as "a is an integer which is constant"
int const a = 1; // read as "a is a constant integer"
Both are the same thing. Therefore:
a = 2; // Can't do ...