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Is there an R function for finding the index of an element in a vector?
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481
The function match works on vectors :
x <- sample(1:10)
x
# [1] 4 5 9 3 8 1 6 10 7 ...
Download JSON object as a file from browser
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JS (pure JS, not jQuery here):
var dataStr = "data:text/json;charset=utf-8," + encodeURIComponent(JSON.stringify(storageObj));
var dlAnchorElem = document.getElementById('downloadAnchorElem');
dlAnchorElem.setAttribute("href", dataStr );
dlAnchorElem.setAttribute("download", "scene.json");...
IN vs OR in the SQL WHERE Clause
...NT(*) FROM t_inner WHERE val IN (1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000);
1 row fetched in 0.0032 (1.2679 seconds)
SELECT COUNT(*) FROM t_inner WHERE val = 1000 OR val = 2000 OR val = 3000 OR val = 4000 OR val = 5000 OR val = 6000 OR val = 7000 OR val = 8000 OR val = 9000;
1 row fetch...
Why do results vary based on curly brace placement?
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answered Sep 4 '10 at 8:50
ResiduumResiduum
11k77 gold badges3535 silver badges6969 bronze badges
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How to move one word left in the vi editor
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286
Use b to move back one word.
Use w to move forward one word.
And here is a cheat sheet that m...
Modify UIImage renderingMode from a storyboard/xib file
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edited Nov 20 '18 at 13:58
Bram
97911 gold badge1010 silver badges2929 bronze badges
answered ...
leading zeros in rails
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338
It'd be better to store it as an integer and just display it as you described on runtime. Every ...
What is a reasonable order of Java modifiers (abstract, final, public, static, etc.)?
...on for a modifier order and also includes the new default modifier of Java 8.
public / private / protected
abstract
static
final
transient
volatile
**default**
synchronized
native
strictfp
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numpy matrix vector multiplication [duplicate]
...>> b = np.array([1, 2, 3])
>>> print a.dot(b)
array([16, 6, 8])
This occurs because numpy arrays are not matrices, and the standard operations *, +, -, / work element-wise on arrays. Instead, you could try using numpy.matrix, and * will be treated like matrix multiplication.
Ot...