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Linux c++ error: undefined reference to 'dlopen'
I work in Linux with C++ (Eclipse), and want to use a library.
Eclipse shows me an error:
10 Answers
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Detect and exclude outliers in Pandas data frame
... remove all rows that have outliers in at least one column, the following expression would do that in one shot.
df = pd.DataFrame(np.random.randn(100, 3))
from scipy import stats
df[(np.abs(stats.zscore(df)) < 3).all(axis=1)]
description:
For each column, first it computes the Z-score of ea...
Which iOS app version/build number(s) MUST be incremented upon App Store release?
...of the conditions is "You cannot re-use Version Numbers," but in the last example, version numbers are staying the same while build numbers are increasing. Am I misinterpreting something?
– Emil
Mar 20 '18 at 17:05
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How can I find the current OS in Python? [duplicate]
...form (docs) to get the platform. sys.platform will distinguish between linux, other unixes, and OS X, while os.name is "posix" for all of them.
For much more detailed information, use the platform module. This has cross-platform functions that will give you information on the machine architecture, ...
Change type of varchar field to integer: “cannot be cast automatically to type integer”
...
There is no implicit (automatic) cast from text or varchar to integer (i.e. you cannot pass a varchar to a function expecting integer or assign a varchar field to an integer one), so you must specify an explicit cast using ALTER TABLE ... ALTER COLUMN ... TYPE ... USING...
Can pandas automatically recognize dates?
...ively surprised by the fact that while reading data from a data file (for example) pandas is able to recognize types of values:
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Passing parameters to a Bash function
...ame), that is $1, $2, and so forth. $0 is the name of the script itself.
Example:
function_name () {
echo "Parameter #1 is $1"
}
Also, you need to call your function after it is declared.
#!/usr/bin/env sh
foo 1 # this will fail because foo has not been declared yet.
foo() {
echo "Pa...
Does JavaScript have a built in stringbuilder class?
...
If you have to write code for Internet Explorer make sure you chose an implementation, which uses array joins. Concatenating strings with the + or += operator are extremely slow on IE. This is especially true for IE6. On modern browsers += is usually just as fast ...
What does Java option -Xmx stand for? [duplicate]
java -Xmx1024m filename
5 Answers
5
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In Node.js, how do I “include” functions from my other files?
...
You can require any js file, you just need to declare what you want to expose.
// tools.js
// ========
module.exports = {
foo: function () {
// whatever
},
bar: function () {
// whatever
}
};
var zemba = function () {
}
And in your app file:
// app.js
// ======
var tools = re...