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XPath: How to select elements based on their value?
...st thing is when using [], there are only two types of data:
[number] to select a node from node-set
[bool] to filter a node-set from node-set
In this case, the value is evaluated to boolean by function boolean(), and there is a rule:
Filters are always evaluated with respect to a context.
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Is there a way to select sibling nodes?
For some performance reasons, I am trying to find a way to select only sibling nodes of the selected node.
13 Answers
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res.sendFile absolute path
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The express.static middleware is separate from res.sendFile, so initializing it with an absolute path to your public directory won't do anything to res.sendFile. You need to use an absolute path directly with res.sendFile. There are two simple ways to do it:
res.s...
How do I copy to the clipboard in JavaScript?
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document.body.appendChild(textArea);
textArea.focus();
textArea.select();
try {
var successful = document.execCommand('copy');
var msg = successful ? 'successful' : 'unsuccessful';
console.log('Fallback: Copying text command was ' + msg);
} catch (err) {
consol...
Nexus 7 not visible over USB via “adb devices” from Windows 7 x64
...he Nexus, or undoubtedly any other device. Not exactly obvious, but if you select the second option "Camera (PTP)" the device is available for debugging (the lesson is ignore the camera, and focus on the protocol PTP).
This configuration is persistent, and I'm guessing that with a brand new device...
Android RoundRectShape圆角矩形使用详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...话，传入null即可。
inset
A RectF that specifies the distance from the inner rect to each side of the outer rect. For no inner, pass null.
//指定外部矩形4条边 与内部矩形的4条边的个距离，也用RectF的方式指定。
innerRadii
An array of 8 radius values, for ...
Adding options to a using jQuery?
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This did NOT work in IE8 (yet did in FF):
$("#selectList").append(new Option("option text", "value"));
This DID work:
var o = new Option("option text", "value");
/// jquerify the DOM object 'o' so we can use the html method
$(o).html("option text");
$("#selectList").a...
How can I suppress column header output for a single SQL statement?
...in batch (using the mysql command-line binary). I want one of my several SELECT statements to not print the column headers, just the selected records. Is this possible?
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How do I get SUM function in MySQL to return '0' if no values are found?
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Use COALESCE to avoid that outcome.
SELECT COALESCE(SUM(column),0)
FROM table
WHERE ...
To see it in action, please see this sql fiddle: http://www.sqlfiddle.com/#!2/d1542/3/0
More Information:
Given three tables (one with all numbers, one with all nul...
abort: no username supplied (see “hg help config”)
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From Mercurial 3.0 may be helpful the hg config -e command which opens editor with your home configuration file. See hg help -c config for more options.
– santiagopim
May 9 '14 at 11:47
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