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Count with IF condition in MySQL query
I have two tables, one is for news and the other one is for comments and I want to get the count of the comments whose status has been set as approved.
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How to check whether a variable is a class or not?
...k is redundant. If it didn't there would be no way to instantiate whatever and thus you couldn't perform the check in the first place.
– a_guest
Dec 16 '16 at 12:42
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I want to exception handle 'list index out of range.'
I am using BeautifulSoup and parsing some HTMLs.
6 Answers
6
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Why is an MD5 hash created by Python different from one created using echo and md5sum in the shell?
A Python MD5 hash is different than the one created by the md5sum command on the shell. Why?
1 Answer
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How to load program reading stdin and taking parameters in gdb?
Question cribbed from here .
Unfortunately I don't understand the solution and am not sure what to do beyond compiling with the -g option and running the command M-x gdb.
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Final arguments in interface methods - what's the point?
...va, it is perfectly legal to define final arguments in interface methods and do not obey that in the implementing class, e.g.:
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Does JavaScript have a built in stringbuilder class?
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When I have to do lots of string concatenations I usually fill an array and don't use a string builder class:
var html = [];
html.push(
"<html>",
"<body>",
"bla bla bla",
"</body>",
"</html>"
);
return html.join("");
Note that the push methods accepts multiple...
Update MongoDB field using value of another field
...ion 4.2+ which allows using of aggregation pipeline in the update document and the updateOne, updateMany or update collection method. Note that the latter has been deprecated in most if not all languages drivers.
MongoDB 4.2+
Version 4.2 also introduced the $set pipeline stage operator which is an...
Maintain git repo inside another git repo
...r Git repository. This lets you clone another repository into your project and keep your commits separate.
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Check if directory mounted with bash
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Running the mount command without arguments will tell you the current mounts. From a shell script, you can check for the mount point with grep and an if-statement:
if mount | grep /mnt/md0 > /dev/null; then
echo "yay"
else
echo "nay"
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