大约有 23,000 项符合查询结果（耗时：0.0858秒） [XML]
Is there a way to 'uniq' by column?
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To consider multiple column.
Sort and give unique list based on column 1 and column 3:
sort -u -t : -k 1,1 -k 3,3 test.txt
-t : colon is separator
-k 1,1 -k 3,3 based on column 1 and column 3
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Pythonic way to check if a file exists? [duplicate]
...t. If it does exists, it will print "Ooops" and return None (untested, and based solely on reading the python documentation, so might not be 100% correct).
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getViewTypeCount and getItemViewType methods of ArrayAdapter
...st has the same layout, you don't need to worry about view types. In fact, BaseAdapter.java provides a default behavior for all adapters:
public int getItemViewType(int position) {
return 0;
}
public int getViewTypeCount() {
return 1;
}
This indeed provides you with the same view type fo...
How to set selected item of Spinner by value, not by position?
I have a update view, where I need to preselect the value stored in database for a Spinner.
25 Answers
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Why there is no ConcurrentHashSet against ConcurrentHashMap
HashSet is based on HashMap.
9 Answers
9
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Change select box option background color
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I don't know if you've considered it or not but if your application is based on coloring various groupings of items you should probably use the <optgroup> tag coupled with a class for further referencing. For example:
<select>
<optgroup label="Numbers" class="green">
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How to get the raw value an field?
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Track all pressed keys based on their key codes
I suppose one could listen to the keyup events and keep an array of all characters entered, based on their keycodes. But it's a pretty tedious task and probably prone to bugs.
http://unixpapa.com/js...
Where to put view-specific javascript files in an ASP.NET MVC application?
...ontrollerDescriptor, string actionName)
{
var action = base.FindAction(controllerContext, controllerDescriptor, actionName);
if (action != null)
{
return action;
}
if (actionName.EndsWith(".js"))
{
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Get the last inserted row ID (with SQL statement) [duplicate]
... row (similar to behavior of an update statement that updates a single row based on input of multiple joined rows).
– BVernon
Jan 6 '19 at 22:56
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AWK: Access captured group from line pattern
...is something I need all the time so I created a bash function for it. It's based on glenn jackman's answer.
Definition
Add this to your .bash_profile etc.
function regex { gawk 'match($0,/'$1'/, ary) {print ary['${2:-'0'}']}'; }
Usage
Capture regex for each line in file
$ cat filename | regex...