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isset() and empty() - what to use
...st looking to see if it is empty just use empty as it checks whether it is set as well, if you want to know whether something is set or not use isset.
Empty checks if the variable is set and if it is it checks it for null, "", 0, etc
Isset just checks if is it set, it could be anything not null
W...
NSURLRequest setting the HTTP header
I need to set the HTTP header for a request. In the documentation for the NSURLRequest class I didn't find anything regarding the HTTP header. How can I set the HTTP header to contain custom data?
...
How do I change Eclipse to use spaces instead of tabs?
...ck Formatter
Click the Edit button
Click the Indentation tab
Under General Settings, set Tab policy to: Spaces only
Click OK ad nauseam to apply the changes.
[Note: If necessary save profile with a new name as the default profile cannot be overwritten.]
Default Text Editor
Before version 3.6:
W...
How do I check for C++11 support?
...
There is a constant named __cplusplus that C++ compilers should set to the version of the C++ standard supported see this
#if __cplusplus <= 199711L
#error This library needs at least a C++11 compliant compiler
#endif
It is set to 199711L in Visual Studio 2010 SP1, but I do not kn...
What is the best way to do a substring in a batch file?
...0, %1, etc. you have to assign them to a normal environment variable using set first:
:: Does not work:
@echo %1:~10,5
:: Assign argument to local variable first:
set var=%1
@echo %var:~10,5%
The syntax is even more powerful:
%var:~-7% extracts the last 7 characters from %var%
%var:~0,-4% wo...
How to update SQLAlchemy row entry?
...user.no_of_logins + 1. Translated into sql the latter correct way becomes: SET no_of_logins = no_of_logins + 1.
– ChaimG
Jul 14 '16 at 20:19
6
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SQL Server Script to create a new user
... to be accessing the SQL Server from an application, then you will want to set the server up for "Mixed Mode" (both Windows and SQL logins) and create a Login as shown above. You'll then "GRANT" priviliges to that SQL Login based on what is needed for your app. See here for more information.
UPDA...
Redis strings vs Redis hashes to represent JSON: efficiency?
... JSON-encoded string in a single key and keep track of all Objects using a set (or list, if more appropriate). For example:
INCR id:users
SET user:{id} '{"name":"Fred","age":25}'
SADD users {id}
Generally speaking, this is probably the best method in most cases. If there are a lot of fields in th...
Why does running the Flask dev server run itself twice?
...() function code; your script is run again with subprocess.call().
If you set use_reloader to False you'll see the behaviour go away, but then you also lose the reloading functionality:
app.run(port=4004, debug=config.DEBUG, host='0.0.0.0', use_reloader=False)
You can disable the reloader when u...
How to navigate through the source code by parts in CamelCase (instead of whole words)?
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Yes, enable Use "CamelHumps" words in Settings | Editor | General | Smart Keys.
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