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Why do enum permissions often have 0, 1, 2, 4 values?
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If it is still not clear from the other answers, think about it like this:
[Flags]
public enum Permissions
{
None = 0,
Read = 1,
Write = 2,
Delete = 4
}
is just a shorter way to write:
public enum Permissions
{
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Why is sed not recognizing \t as a tab?
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Called from a script, that won't work: tabs would be ignored by sh. For example, the following code from a shell script will add $TEXT_TO_ADD, without prepending it by a tabulation: sed "${LINE}a\\ $TEXT_TO_ADD " $FIL...
How to change a PG column to NULLABLE TRUE?
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From the fine manual:
ALTER TABLE mytable ALTER COLUMN mycolumn DROP NOT NULL;
There's no need to specify the type when you're just changing the nullability.
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jQuery.inArray(), how to use it right?
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The answer comes from the first paragraph of the documentation check if the results is greater than -1, not if it's true or false.
The $.inArray() method is similar to JavaScript's native .indexOf() method in that it returns -1 when it doesn...
RESTful URL design for search
...hat they are standard and widely understood and that they can be generated from form-get.
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How do I programmatically determine if there are uncommitted changes?
...t" for alternatives (like git status --porcelain)
You can take inspiration from the new "require_clean_work_tree function" which is written as we speak ;) (early October 2010)
require_clean_work_tree () {
# Update the index
git update-index -q --ignore-submodules --refresh
err=0
# D...
UnicodeDecodeError: 'charmap' codec can't decode byte X in position Y: character maps to
...so tried with other encoding but all in vain. In this code I am also using from geotext import GeoText. Please suggest a solution.
– Salah
Jun 4 '18 at 14:37
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Libraries do not get added to APK anymore after upgrade to ADT 22
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Quoting Streets of Boston from his adt-dev post:
When upgrading, the 'Order and Export' of the new 'Android Private
Libraries' is not always checked. And the android-support-v4.jar is now in
this 'Android Private Libraries' section.
To...
How to use double or single brackets, parentheses, curly braces
...mp;1; date; } | tee logfile
# now we can calculate the duration of a build from the logfile
There is a subtle syntactic difference with ( ), though (see bash reference) ; essentially, a semicolon ; after the last command within braces is a must, and the braces {, } must be surrounded by spaces.
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Do HttpClient and HttpClientHandler have to be disposed between requests?
...reference.
I'd also strongly suggest that you read the HttpClient chapter from Designing Evolvable Web APIs with ASP.NET for context on what is going on under the hood, particularly the "Lifecycle" section quoted here:
Although HttpClient does indirectly implement the IDisposable
interface, t...