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INNER JOIN vs LEFT JOIN performance in SQL Server
... slower; by definition, an outer join (LEFT JOIN or RIGHT JOIN) has to do all the work of an INNER JOIN plus the extra work of null-extending the results. It would also be expected to return more rows, further increasing the total execution time simply due to the larger size of the result set.
(A...
Is it possible to read the value of a annotation in java?
...ation and if the annotation policy retains the annotation at runtime. Naturally if the retention policy doesn't keep the annotation at runtime, you won't be able to query it at runtime.
An answer that's since been deleted (?) provided a useful link to an annotations tutorial that you may find helpf...
How to drop a list of rows from Pandas dataframe?
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this doesnt allow you to index on the index name itself
– ingrid
Nov 2 '16 at 20:33
47
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“Find next” in Vim
...for example, ?cake) instead of /, it is the other way round.
If it is installed on your system, you should try to run vimtutor command from your terminal, which will start a tutorial of the basic Vim commands.
Rob Wells advice about * and # is also very pertinent.
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Remove directory which is not empty
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There is a module for this called rimraf (https://npmjs.org/package/rimraf). It provides the same functionality as rm -Rf
Async usage:
var rimraf = require("rimraf");
rimraf("/some/directory", function () { console.log("done"); });
Sync usage:
rimr...
How to delete a whole folder and content?
...delete the DCIM folder because it is a system folder. As you delete it manually on phone it will delete the contents of that folder, but not the DCIM folder. You can delete its contents by using the method below:
Updated as per comments
File dir = new File(Environment.getExternalStorageDirectory()...
Why is `replace` property deprecated in AngularJS directives? [duplicate]
...PI docs , directives' replace attribute is deprecated, so in the future, all directives will behave with the current default of replace: false .
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How to simulate Android killing my process
...tivityA instead.
This is what Android docs are saying about that:
Normally, the system clears a task (removes all activities from the stack above the root activity) in certain situations when the user re-selects that task from the home screen. Typically, this is done if the user hasn't visited ...
How to set the first option on a select box using jQuery?
...ic concept, and in this case it looks like he wants to reset it to "Select All", which is the first option.
– Jack
Sep 16 '11 at 14:08
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How to measure time taken by a function to execute
...ction you're measuring time for
var t1 = performance.now()
console.log("Call to doSomething took " + (t1 - t0) + " milliseconds.")
NodeJs: it is required to import the performance class
Using console.time: (non-standard) (living standard)
console.time('someFunction')
someFunction() // W...