大约有 40,000 项符合查询结果（耗时：0.0670秒） [XML]
PowerShell: Setting an environment variable for a single command only
... as @Joey mentioned, if you want to do env vars cleanly, you could: & {$pre = $env:foo; $env:foo = 'bar'; ./myscript; if ($pre) {$env:foo = $pre} else {Remove-Item env:\foo}... some might say unwieldy, but will avoid side effects...
– Lucas
Jun 21 '1...
How do I check for nulls in an '==' operator overload without infinite recursion?
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And what does foo1.Equals(foo2) means if, for example, I want foo1 == foo2 only if foo1.x == foo2.x && foo1.y == foo2.y? Isn't this answering ignoring the case where foo1 != null but foo2 == null?
– Daniel
Aug 28 '19 at 6:05
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How can I select from list of values in SQL Server
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no, no, I have a list of several hundreds of values, manually it would be torture
– Eedoh
Oct 14 '09 at 8:29
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Proper way to catch exception from JSON.parse
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We can check error & 404 statusCode, and use try {} catch (err) {}.
You can try this :
const req = new XMLHttpRequest();
req.onreadystatechange = function() {
if (req.status == 404) {
console.log("404");
return ...
How do I solve the INSTALL_FAILED_DEXOPT error?
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I can concur the cause & effect. The same situation happened in my case after tinkering with jars. For me this was on Android 2.3 Gingerbread based devices only, ICS & Lollipop were fine.
– AlexVPerl
Ma...
Unpack a list in Python?
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function_that_needs_strings(*my_list) # works!
You can read all about it here.
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How do I get the SharedPreferences from a PreferenceActivity in Android?
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this, Android provides a simple set of APIs.
Preferences are typically name value pairs. They can be stored as
“Shared Preferences” across various activities in an application (note
currently it cannot be shared across processes). Or it can be
something that needs to be stored spe...
Peak memory usage of a linux/unix process
... What if I don't know PID? For example in case when the program runs a small amount of time (<1s)
– diralik
Feb 23 '19 at 22:38
6
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Show/Hide the console window of a C# console application
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Even though this does not answer the OP's question, I really appreciate you giving this answer. It was exactly what I needed :)
– kayleeFrye_onDeck
Dec 17 '14 at 22:31
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What is that “total” in the very first line after ls -l? [closed]
...he files with a line
`total BLOCKS', where BLOCKS is the total disk allocation for all
files in that directory.
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