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How to count items in JSON object using command line?
... Your initial jq code (.[]) return the length of each object in the root array, while I'm looking for the length of the root array itself. Need to fix to .
– Édouard Lopez
Jan 26 '14 at 9:52
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Difference between jQuery parent(), parents() and closest() functions
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Begins with the parent element
Travels up the DOM tree to the document's root element, adding each
ancestor element to a temporary collection; it then filters that
collection based on a selector if one is supplied
The returned jQuery object contains zero, one, or multiple elements
.parent()
Give...
刘强东“一元年薪”背后的O2O棋局 - 资讯 - 清泛网 - 专注C/C++及内核技术
...电商未来的发展路线？
“现在应该是对线上线下的企业如何按照新的规则围绕互联网和用户运转下去的摸索状态。”唐兴通举个例子：以前超市只是卖东西，未来它可能还用于仓储；以前电商要做物流配送，未来它可能借助超...
Xcode — what is $(SRCROOT)?
... need to update some paths. The library search paths all start with $(SRCROOT) . What does that mean?
3 Answers
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Data binding to SelectedItem in a WPF Treeview
...e namespace declaration):
<TreeView ItemsSource="{Binding Path=Root.Children}" local:TreeViewHelper.SelectedItem="{Binding Path=SelectedItem, Mode=TwoWay}">
</TreeView>
Now you can bind the selected item, and also set it in your view model to change it programmatically, s...
Changing the maximum length of a varchar column?
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Also it works for MySQL and this question is tagged [TSQL] so it's in the wrong place
– jean
Mar 28 '18 at 10:55
6
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URL rewriting with PHP
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The .htaccess route with mod_rewrite
Add a file called .htaccess in your root folder, and add something like this:
RewriteEngine on
RewriteRule ^/?Some-text-goes-here/([0-9]+)$ /picture.php?id=$1
This will tell Apache to enable mod_rewrite for this folder, and if it gets asked a URL matching th...
Insert string at specified position
...er than the putinplace function. I was using the later function to parse a mysql query. Although the output looked alright, the query resulted in a error which took me a while to track down. The following is my version of the stringInsert function requiring only one parameter.
function stringInsert...
Android - Pulling SQlite database android device
...droid v4 or above, you can pull app data, including it's database, without root by using adb backup command, then extract the backup file and access the sqlite database.
First backup app data to your PC via USB cable with the following command, replace app.package.name with the actual package name ...
What is the most effective way for float and double comparison?
...vate:
// The data type used to store the actual floating-point number.
union FloatingPointUnion {
RawType value_; // The raw floating-point number.
Bits bits_; // The bits that represent the number.
};
// Converts an integer from the sign-and-magnitude representation to
// t...