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How do I concatenate const/literal strings in C?
...nnot be used as a buffer, since it is a constant. Thus, you always have to allocate a char array for the buffer.
The return value of strcat can simply be ignored, it merely returns the same pointer as was passed in as the first argument. It is there for convenience, and allows you to chain the call...
How to store a command in a variable in a shell script?
... that variable can be set by someone with less privileges. (Iterating over all subdirectories in /tmp, for instance? You'd better trust every single user on the system to not make one called $'/tmp/evil-$(rm -rf $HOME)\'$(rm -rf $HOME)\'/').
– Charles Duffy
Jun...
is of a type that is invalid for use as a key column in an index
...x. nvarchar(100)
2. Create a check constraint that compares the value with all the keys in the table.
The condition is:
([dbo].[CheckKey]([key])=(1))
and [dbo].[CheckKey] is a scalar function defined as:
CREATE FUNCTION [dbo].[CheckKey]
(
@key nvarchar(max)
)
RETURNS bit
AS
BEGIN
declare...
Change a column type from Date to DateTime during ROR migration
...
This answer is only partially correct, you can not use change_column inside change even on rails 4 or down migration will not work. You should use up/down no matter the version of rails.
– Alan Peabody
Jul 18 '1...
How do I serialize an object and save it to a file in Android?
...s implicitly added to your class if you use the Serializable interface. If all you want is simple object serialization, that is what I would use. It is extremely easy to implement too. developer.android.com/reference/java/io/Serializable.html
– mtmurdock
Aug 9 ...
Are Mutexes needed in javascript?
...reads in the implementation. Functions like setTimeout() and asynchronous callbacks need to wait for the script engine to sleep before they're able to run.
That means that everything that happens in an event must be finished before the next event will be processed.
That being said, you may need a ...
Shallow copy of a Map in Java
...rstand it, there are a couple of ways (maybe others as well) to create a shallow copy of a Map in Java:
3 Answers
...
iOS forces rounded corners and glare on inputs
...border-radius:0;
border-radius:0;
}
This can be extended to apply to all webkit styled form components such as input, select, button or textarea.
In reference to the original question, you wouldn't use the value 'none' when clearing any unit based css element.
Also be aware that this hides che...
Java Replacing multiple different substring in a string at once (or in the most efficient way)
...time up-front to compile, so it won't be efficient if your input is very small or your search pattern changes frequently).
Below is a full example, based on a list of tokens taken from a map. (Uses StringUtils from Apache Commons Lang).
Map<String,String> tokens = new HashMap<String,Strin...
.NET unique object identifier
...
I guess for lookups you'd have to iterate over all the references you track: WeakReference to the same object are not equal to each other, so you can't really do much else.
– Roman Starkov
Apr 23 '10 at 10:31
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