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What are the underlying data structures used for Redis?
...u asked, here is the underlying implementation of every Redis data type.
Strings are implemented using a C dynamic string library so that we don't pay (asymptotically speaking) for allocations in append operations. This way we have O(N) appends, for instance, instead of having quadratic behavior.
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Create a .txt file if doesn't exist, and if it does append a new line
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string path = @"E:\AppServ\Example.txt";
File.AppendAllLines(path, new [] { "The very first line!" });
See also File.AppendAllText(). AppendAllLines will add a newline to each line without having to put it there yourself.
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How to create a new database after initally installing oracle database 11g Express Edition?
...s Connection Name, Username, and Password.
For security, the password characters that you type appear as
asterisks.
Near the Password field is the check box Save Password. By default, it
is deselected. Oracle recommends accepting the default.
In the New/Select Database Connection ...
Using StringWriter for XML Serialization
...lly added <?xml version="1.0" encoding="utf-8"?><test/> to the string, then declaring the SqlParameter to be of type SqlDbType.Xml or SqlDbType.NVarChar would give you the "unable to switch the encoding" error. Then, when inserting manually via T-SQL, since you switched the declared enco...
Does a `+` in a URL scheme/host/path represent a space?
I am aware that a + in the query string of a URL represents a space. Is this also the case outside of the query string region? That is to say, does the following URL:
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Removing “NUL” characters
I have got characters like that in my notepad++
7 Answers
7
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Suppress warning messages using mysql from within Terminal, but password written in bash script
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I use something like:
mysql --defaults-extra-file=/path/to/config.cnf
or
mysqldump --defaults-extra-file=/path/to/config.cnf
Where config.cnf contains:
[client]
user = "whatever"
password = "whatever"
host = "whatever"
This allows you to have multiple config f...
Flags to enable thorough and verbose g++ warnings
...op). It is also warning for the
constructor of a const array of const std::string (where this is no
loop in user code).
-Wzero-as-null-pointer-constant and -Wuseless-cast are
GCC-4.7-only warnings, which I will add when I transition to GCC 4.7.
I've filed a few bug reports / enhancement requests a...
Useless use of cat?
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@randomstring I hear you, but I think it really depends on the use case. When used on the command line one additional cat in the pipe might not be a big deal depending on the data, but when used as a programming environment it can b...
How to pass the values from one activity to previous activity
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Intent resultIntent = new Intent();
resultIntent.putExtra(PUBLIC_STATIC_STRING_IDENTIFIER, enteredTextValue);
setResult(Activity.RESULT_OK, resultIntent);
finish();
The final step is in the calling Activity: Override onActivityResult to listen for callbacks from the text entry Activity. Get the...