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How to generate random SHA1 hash to use as ID in node.js?
I am using this line to generate a sha1 id for node.js:
4 Answers
4
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What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
In the following method definitions, what does the * and ** do for param2 ?
22 Answers
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Are HTTP cookies port specific?
...eplaces RFC 2109 and RFC 2965 (both RFCs are now marked as "Historic") and formalizes the syntax for real-world usages of cookies. It clearly states:
Introduction
...
For historical reasons, cookies contain a number of security and privacy infelicities. For example, a server ca...
How to create json by JavaScript for loop?
...
var status = document.getElementsByName("status")[0];
var jsonArr = [];
for (var i = 0; i < status.options.length; i++) {
jsonArr.push({
id: status.options[i].text,
optionValue: status.options[i].value
});
}
</script>
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How did Google manage to do this? Slide ActionBar in Android application
... it's clicked, collapses the menu. So, here's some code:
First, the class for collapsing / expanding (SlideMenu.java):
package your.cool.app;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Rect;
import android.util.Log;
import a...
What is the largest TCP/IP network port number allowable for IPv4?
... "Hey, Jim, how many ports should we support?" "Just make it 16 bits for good measure. No one will ever have more than a few hundred open at once, tops."
– JessieArr
Sep 12 '14 at 13:41
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Compare double to zero using epsilon
...000 00000000 00000000 00000000 00000000 00000001 × 2^0 = 1 + 2^-52
Therefore:
epsilon = (1 + 2^-52) - 1 = 2^-52
Are there any numbers between 0 and epsilon? Plenty... E.g. the minimal positive representable (normal) number is:
1.0000 00000000 00000000 00000000 00000000 00000000 00000000 × 2^...
How to convert a Binary String to a base 10 integer in Java
...ompletely missed the second line on the parseInt documentation that allows for the radix. Works like a dream.
– dwwilson66
Apr 16 '12 at 17:58
1
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Suppress Scientific Notation in Numpy When Creating Array From Nested List
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I guess what you need is np.set_printoptions(suppress=True), for details see here:
http://pythonquirks.blogspot.fr/2009/10/controlling-printing-in-numpy.html
For SciPy.org numpy documentation, which includes all function parameters (suppress isn't detailed in the above link), see here...
An “and” operator for an “if” statement in Bash
... trying to create a simple Bash script to check if the website is down and for some reason the "and" operator doesn't work:
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