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How to npm install to a specified directory?
...ell it to run once? I solved it temporarily by changing directory and then calling npm install, but --prefix seems like a nicer solution, if it wasn't causing a recursion.
– adi518
Aug 10 '18 at 17:55
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c# datatable insert column at position 0
...e how to do :
DataTable dt = new DataTable();
dt.Columns.Add("ID");
dt.Columns.Add("FirstName");
dt.Columns.Add("LastName");
dt.Columns.Add("Address");
dt.Columns.Add("City");
// The table structure is:
//ID FirstName LastName Address ...
How to re-raise an exception in nested try/except blocks?
... e1:
... raise err from None
>>> f()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 9, in f
File "<stdin>", line 3, in f
SyntaxError: None
>>>
...
Turn off autosuggest for EditText?
...e same question but I still wanted to set this option in my XML file so I did a little more research until I found it out myself.
Add this line into your EditText.
android:inputType="textFilter"
Here is a Tip. Use this line if you want to be able to use the "enter" key.
android:inputType="text...
Why do Java webapps use .do extension? Where did it come from?
...he JSP processing servlet is
mapped to the *.jsp pattern so that
it is called to process every JSP page
that is requested. To use the *.do
extension (which implies "do
something"), the mapping entry would
look like this:
<servlet-mapping>
<servlet-name>action</servlet...
What do single quotes do in C++ when used on multiple characters?
...
No, it's not an address. It's the so-called multibyte character.
Typically, it's the ASCII values of the four characters combined.
't' == 0x74; 'e' == 0x65; 's' == 0x73; 't' == 0x74;
So 0x74657374 is 1952805748.
But it can also be 0x74736574 on some other ...
Unioning two tables with different number of columns
...he use of * as column list specifier. This type of errors can be easily avoided by entering the column list explicitly:
select col_a, col_b, col_c from test1_1790
union all
select col_a, col_b, col_c from test2_1790;
A more frequent scenario for this error is when you inadvertently swap (or shift) ...
PatternSyntaxException: Illegal Repetition when using regex in Java
...e error message: "Illegal repetition".
You should escape them: "\\{\"user_id\" : [0-9]*\\}".
And since you seem to be trying to parse JSON, I suggest you have a look at Jackson.
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How to create function that returns nothing
...
Use RETURNS void like below:
CREATE FUNCTION stamp_user(id int, comment text) RETURNS void AS $$
#variable_conflict use_variable
DECLARE
curtime timestamp := now();
BEGIN
UPDATE users SET last_modified = curtim...
Javascript call() & apply() vs bind()?
I already know that apply and call are similar functions which set this (context of a function).
22 Answers
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