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Create a tar.xz in one command
I am trying to create a .tar.xz compressed archive in one command. What is the specific syntax for that?
5 Answers
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How to get execution time in rails console?
I want compare time of execution Post.all and SELECT * FROM posts (or some other statements) How can i get execution time of Post.all ?
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Android get color as string value
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This is not working any more, error 'Expected resource of type String'
– Clive Jefferies
Mar 5 '15 at 15:29
21
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Using unset vs. setting a variable to empty
...ides returning a return code, set some meaningful message saying what was expected.
4 Answers
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What is the equivalent of the C# 'var' keyword in Java?
...yword in C# is implicit type declaration. What is the Java equivalent syntax for var ?
15 Answers
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ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
...most cases you should also set up individual user accounts before working extensively with the DB as well.
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How do I check for null values in JavaScript?
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Javascript is very flexible with regards to checking for "null" values. I'm guessing you're actually looking for empty strings, in which case this simpler code will work:
if(!pass || !cpass || !email || !cemail || !user){
Which will check for ...
Retina displays, high-res background images
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Do I need to double the size of the .box div to 400px by 400px to
match the new high res background image
No, but you do need to set the background-size property to match the original dimensions:
@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 1...
Why use Abstract Base Classes in Python?
... EAFP or type introspection to confirm that the unknown object meets this expected contract.
But there are also higher-level, semantic promises in the contract.
For example, if there is a __str__() method, it is expected to return a string representation of the object. It could delete all contents o...
Why does pylint object to single character variable names?
... and not too short.
You can use this to avoid such short names:
my_list.extend(x_values)
Or tweak PyLint's configuration to tell PyLint what variable name are good.
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