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How to check if my string is equal to null?
...false.
The way to compare with null is to use x == null and x != null.
Moreover, x.field and x.method() throws NullPointerException if x == null.
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log4j: Log output of a specific class to a specific appender
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How to properly document S4 class slots using Roxygen2?
...oint out, this syntax is different than other lines, and we may hope for a more robust solution in the future that incorporates knowledge of inheritance -- but today that does not exist.
As pointed out by @Brian Diggs, this feature was pulled into 3.0.0, further discussion at https://github.com/klu...
git push local branch with same name as remote tag
...llowing error:
$ git push origin master
error: src refspec master matches more than one.
error: failed to push some refs to 'ssh://user@host/srv/git/repo'
This happened because I had accidentally created a master tag locally:
$ git tag
master
tag1
tag2
tag3
tag4
Once I deleted this tag locally...
Can attributes be added dynamically in C#?
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How to update a record using sequelize for node?
...e 2016-03-09
The latest version actually doesn't use success and error anymore but instead uses then-able promises.
So the upper code will look as follows:
Project.update(
{ title: 'a very different title now' },
{ where: { _id: 1 } }
)
.then(result =>
handleResult(result)
)
.cat...
C# listView, how do I add items to columns 2, 3 and 4 etc?
...s3" };
listView1.Items.Add("Column1Text").SubItems.AddRange(row1);
And a more verbose way is here:
ListViewItem item1 = new ListViewItem("Something");
item1.SubItems.Add("SubItem1a");
item1.SubItems.Add("SubItem1b");
item1.SubItems.Add("SubItem1c");
ListViewItem item2 = new ListViewItem("Somethi...
character showing up in files. How to remove them?
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