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Which characters are illegal within a branch name?
...ain a \.
On top of that, additional rule for branch name:
They cannot start with a dash -
Thanks to Jakub Narębski, the man page for git check-ref-format has more details.
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Why there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT clause?
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@otc, you could edit the dump, or start again with 5.4
– Jasen
Jan 10 '17 at 5:01
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'System.Net.Http.HttpContent' does not contain a definition for 'ReadAsAsync' and no extension metho
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Yeah me too. Start from scratch. New console application, open up the NuGet console, type Install-Package Microsoft.AspNet.WebApi.Client and try the code.
– Darin Dimitrov
Jan 25 '13 at 12:20
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How do negated patterns work in .gitignore?
I am attempting to use a .gitignore file with negated patterns (lines starting with !), but it's not working the way I expect.
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How to append one file to another in Linux from the shell?
...logfile and resume from where it left off. The -o A flag tells ddrescue to start from byte A in the output file (file1). So wc --bytes file1 | awk '{ print $1 }' just extracts the size of file1 in bytes (you can just paste in the output from ls if you like).
As pointed out by ngks in the comments, ...
Data binding to SelectedItem in a WPF Treeview
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A problem with this approach is the behaviour will only start working once the selected item has been set once via the binding (i.e. from the ViewModel). If the initial value in the VM is null, then the binding won't update the DP value, and the behaviour won't be activated. You c...
pretty-print JSON using JavaScript
...s answer is great if you have an object you want pretty printed. If you're starting from a valid JSON string that you want to pretty printed, you need to convert it to an object first:
var jsonString = '{"some":"json"}';
var jsonPretty = JSON.stringify(JSON.parse(jsonString),null,2);
This build...
Pass in an array of Deferreds to $.when()
...promise, anotherPromise);
e.g.
function GetSomeDeferredStuff() {
// Start with an empty resolved promise (or undefined does the same!)
var promise;
var i = 1;
for (i = 1; i <= 5; i++) {
var count = i;
promise = $.when(promise,
$.ajax({
type:...
Cannot ping AWS EC2 instance
...t. Allow Echo requests by creating a windows firewall exception...
Go to Start and type Windows Firewall with Advanced Security
Select inbound rules
4) Done! Hopefully you should now be able to ping your server.
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In Bash, how can I check if a string begins with some value?
...rackets
# test than within single brackets.
[[ $a == z* ]] # True if $a starts with a "z" (wildcard matching).
[[ $a == "z*" ]] # True if $a is equal to z* (literal matching).
So you had it nearly correct; you needed double brackets, not single brackets.
With regards to your second question,...