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Random float number generation
...d() can be used to generate pseudo-random numbers in C++. In combination with RAND_MAX and a little math, you can generate random numbers in any arbitrary interval you choose. This is sufficient for learning purposes and toy programs. If you need truly random numbers with normal distribution, you...
How to make PDF file downloadable in HTML link?
...s the data to the user's browser, then they can choose to save the PDF despite their browser settings. The pdf_server.php should look like this:
header("Content-Type: application/octet-stream");
$file = $_GET["file"] .".pdf";
header("Content-Disposition: attachment; filename=" . urlencode($file))...
How to avoid scientific notation for large numbers in JavaScript?
...
There's Number.toFixed, but it uses scientific notation if the number is >= 1e21 and has a maximum precision of 20. Other than that, you can roll your own, but it will be messy.
function toFixed(x) {
if (Math.abs(x) < 1.0) {
var e = parseIn...
How can I parse a YAML file in Python
...
The easiest and purest method without relying on C headers is PyYaml (documentation), which can be installed via pip install pyyaml:
#!/usr/bin/env python
import yaml
with open("example.yaml", 'r') as stream:
try:
print(yaml.safe_load(stream)...
What is the meaning of “non temporal” memory accesses in x86
...s filled the sheer size evicts the first elements, making caching of the writes ineffective.
For this and similar situations, processors provide support for non-temporal write operations. Non-temporal in this context means the data will not be reused soon, so there is no reason to cache it. These n...
Mongoose's find method with $or condition does not work properly
Recently I start using MongoDB with Mongoose on Nodejs.
4 Answers
4
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UINavigationController “back button” custom text?
The "back button" of a UINavigationController by default shows the title of the last view in the stack. Is there a way to have custom text in the back button instead?
...
Get PHP class property by string
How do I get a property in a PHP based on a string? I'll call it magic . So what is magic ?
12 Answers
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How to hide iOS status bar
...this value to plist: "View controller-based status bar appearance" and set it to "NO".
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CSS - Expand float child DIV height to parent's height
...ent, add the following properties:
.parent {
overflow: hidden;
position: relative;
width: 100%;
}
then for .child-right these:
.child-right {
background:green;
height: 100%;
width: 50%;
position: absolute;
right: 0;
top: 0;
}
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