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What is the difference between char, nchar, varchar, and nvarchar in SQL Server?
...r and nchar will always use a fixed amount of storage space, even when the string to be stored is smaller than the available space, whereas varchar and nvarchar will use only as much storage space as is needed to store that string (plus two bytes of overhead, presumably to store the string length). ...
Forward host port to docker container
... MacOS only hostname docker.for.mac.host.internal instead of localhost. No extra parameters are needed to docker run for this to work. You can pass this in as an env var using -e if you want to keep your container platform agnostic. That way you can connect to the host named in the env var and pass...
Conveniently Declaring Compile-Time Strings in C++
Being able to create and manipulate strings during compile-time in C++ has several useful applications. Although it is possible to create compile-time strings in C++, the process is very cumbersome, as the string needs to be declared as a variadic sequence of characters, e.g.
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ADB Shell Input Events
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By adb shell input keyevent, either an event_code or a string will be sent to the device.
usage: input [text|keyevent]
input text <string>
input keyevent <event_code>
Some possible values for event_code are:
0 --> "KEYCODE_UNKNOWN"
1 --> "KEYCODE_MENU...
What are the use cases for selecting CHAR over VARCHAR in SQL?
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What is the difference with the string FooBar and varchar(100) vs char(100)? I'm thinking that demonstrates the difference better, yes? No?
– Joel Peltonen
May 21 '14 at 11:22
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How to convert a std::string to const char* or char*?
How can I convert an std::string to a char* or a const char* ?
8 Answers
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byte[] to hex string [duplicate]
How do I convert a byte[] to a string ? Every time I attempt it, I get
19 Answers
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Windows batch: echo without new line
... refined the method so that it can safely print absolutely any valid batch string without the new line, on any version of Windows from XP onward. Note that the :writeInitialize method contains a string literal that may not post well to the site. A remark is included that describes what the character...
How can I redirect HTTP requests made from an iPad?
...ng a forward proxy. The ip2cidr page will be helpful at this point. (As an extra measure, the :8080 port is blocked by my firewall.)
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Why does HTML5 form-validation allow emails without a dot?
...ould have a ^, denoting it should start matching from the beginning of the string and also accept upper case: ^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]+$
– Kohjah Breese
Dec 6 '18 at 14:18
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