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sed one-liner to convert all uppercase to lowercase?
...te: '&' means the full match pattern.
As a side note, GNU extensions include \U (upper), \u (upper next character of match), \l (lower next character of match). For example, if you wanted to camelcase a sentence:
$ sed -r 's/\w+/\u&/g' <<< "Now is the time for all good men..." #...
How does one reorder columns in a data frame?
...t this will drop all columns which are not explicitly specified unless you include everything() as in PaulRougieux's comment
– divibisan
Mar 21 '19 at 16:40
Specifying an Index (Non-Unique Key) Using JPA
...us somehow disagree with other answers, I don't see any good reason to not include such a thing in JPA (especially since the database is not always under your control) for optimal DDL generation support.
By the way, I suggest downloading the JPA 2.0 spec.
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Arrow operator (->) usage in C
... is not. So be careful!
Lets say I write this useless piece of code:
#include <stdio.h>
typedef struct{
int km;
int kph;
int kg;
} car;
int main(void){
car audi = {12000, 230, 760};
car *ptr = &audi;
}
Here pointer ptr points to the address (!...
PowerShell and the -contains operator
...tion: Containment operator. Tells whether a collection of reference values includes a single test value.
In the example you provided you're working with a collection containing just one string item.
If you read the documentation you linked to you'll see an example that demonstrates this behaviour...
How do I convert a dictionary to a JSON String in C#?
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@Jacob - Naive? Ouch. Personally, I can't justify including another assembly when all I need to do can be accomplished with one short and simple method.
– gilly3
Nov 16 '12 at 1:21
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How to delete .orig files after merge from git repository?
... your local commits)
Untracked files:
(use "git add <file>..." to include in what will be committed)
.idea/codeStyles/
.idea/misc.xml.orig
.idea/codeStyles/ was already there before the merge as an untracked file. .idea/misc.xml.orig (and a lot more) had to be removed.
=> Usi...
Difference between $(window).load() and $(document).ready() functions
...window).load(function() {
// executes when complete page is fully loaded, including all frames, objects and images
alert("window is loaded");
});
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Python 2.7: Print to File
... @moose, there is already an excellent Gandaro's answer, that includes my answer and your note.
– citxx
Feb 13 '15 at 21:24
2
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How are booleans formatted in Strings in Python?
... foo on a new line. print(repr("foo")) however prints 'foo' on a new line, including the quotes, since that's what you need to type in the python interpreter to get the corresponding object to the argument in python.
– bobismijnnaam
Nov 21 '15 at 13:35
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