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Checking for an empty field with MySQL
...handle both, use:
email > ''
which can benefit from the range access if you have lots of empty email record (both types) in your table.
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How do I select text nodes with jQuery?
... up with:
var getTextNodesIn = function(el) {
return $(el).find(":not(iframe)").addBack().contents().filter(function() {
return this.nodeType == 3;
});
};
getTextNodesIn(el);
Note: If you're using jQuery 1.7 or earlier, the code above will not work. To fix this, replace addBack()...
Best practices for circular shift (rotate) operations in C++
Left and right shift operators (>) are already available in C++.
However, I couldn't find out how I could perform circular shift or rotate operations.
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How to delete object from array inside foreach loop?
...> $element) {
foreach($element as $valueKey => $value) {
if($valueKey == 'id' && $value == 'searched_value'){
//delete this particular object from the $array
unset($array[$elementKey]);
}
}
}
...
Javascript : Send JSON Object with Ajax?
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With jQuery:
$.post("test.php", { json_string:JSON.stringify({name:"John", time:"2pm"}) });
Without jQuery:
var xmlhttp = new XMLHttpRequest(); // new HttpRequest instance
xmlhttp.open("POST", "/json-handler");
xmlhttp.setRequestHeader("Content-Type", "application/json");
xml...
Updating a local repository with changes from a GitHub repository
...complained: "You asked to pull from the remote 'origin', but did not specify a branch. Because this is not the default configured remote for your current branch, you must specify a branch on the command line." So I tried "$ git pull origin master" and it worked fine.
– Jua...
setting y-axis limit in matplotlib
...
To add to @Hima's answer, if you want to modify a current x or y limit you could use the following.
import numpy as np # you probably alredy do this so no extra overhead
fig, axes = plt.subplot()
axes.plot(data[:,0], data[:,1])
xlim = axes.get_xlim()...
Array.Add vs +=
I've found some interesting behaviour in PowerShell Arrays, namely, if I declare an array as:
3 Answers
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Properly escape a double quote in CSV
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RFC-4180, paragraph "If double-quotes are used to enclose fields, then a double-quote appearing inside a field must be escaped by preceding it with another double quote."
– tommed
Feb 18 '15 at 16:35
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Relative URLs in WordPress
...domain names, changing between http and https etc. Today I discovered that if you define WP_CONTENT_URL with a relative url then when you insert files into posts they use the relative url for the src instead of absolute url. Just what I've always wanted! But the official WordPress documentation says...