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How do I test for an empty string in a Bash case statement?
...ement uses globs, not regexes, and insists on exact matches.
So the empty string is written, as usual, as "" or '':
case "$command" in
"") do_empty ;;
something) do_something ;;
prefix*) do_prefix ;;
*) do_other ;;
esac
...
Is there a JSON equivalent of XQuery/XPath?
...orting, mapping, range
selection, and flexible expressions with wildcard string comparisons
and various operators.
JSONselect has another point of view on the question (CSS selector-like, rather than XPath) and has a JavaScript implementation.
...
Resolve Type from Class Name in a Different Assembly
...d provide a fully qualified assembly name like such:
Type.GetType("System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089");
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improve this answer
...
jQuery ID starts with
...lue: An attribute value. Can be either an unquoted single word or a quoted string." From the linked docs in the answer. Similar to accepted answer.
– Ralph Lavelle
Feb 18 '14 at 0:44
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Why does this assert throw a format exception when comparing structures?
... got it. And yes, it's a bug.
The problem is that there are two levels of string.Format going on here.
The first level of formatting is something like:
string template = string.Format("Expected: {0}; Actual: {1}; Message: {2}",
expected, actual, message);
Then ...
Structure padding and packing
...r alignment is the size to which each member is rounded off
padding is the extra space added to match the alignment
In mystruct_A, assuming a default alignment of 4, each member is aligned on a multiple of 4 bytes. Since the size of char is 1, the padding for a and c is 4 - 1 = 3 bytes while no pa...
How can I return pivot table output in MySQL?
...ards. Note that SUM() can only work with numeric data if you ned to pivot strings you will have to use MAX()
– Raymond Nijland
Mar 25 '19 at 16:25
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Restoring Nuget References?
...&paste it into your Package Manager Console
function Sync-References([string]$PackageId) {
get-project -all | %{
$proj = $_ ;
Write-Host $proj.name;
get-package -project $proj.name | ? { $_.id -match $PackageId } | % {
Write-Host $_.id;
uninstall-package -projectnam...
package R does not exist
...a code auto-generated from your XML files (UI layout, internationalization strings, etc.) If the code used to be working before (as it seems it is), you need to tell your IDE to regenerate these files somehow:
in IntelliJ, select Tools > Android > Generate sources for <project>
(If you...
Python, add trailing slash to directory string, os independently
...ow can I add a trailing slash ( / for *nix, \ for win32) to a directory string, if the tailing slash is not already there? Thanks!
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