大约有 30,000 项符合查询结果(耗时:0.0453秒) [XML]
Assign null to a SqlParameter
The following code gives an error - "No implicit conversion from DBnull to int."
18 Answers
...
How to set up a cron job to run an executable every hour?
...e
path_to_exe >> log_file
to see the output of your command
also errors can be redirected with
path_to_exe &> log_file
also you can use
crontab -l
to check if your edits were saved.
share
|
...
How to compare arrays in JavaScript?
...
405
While this only works for scalar arrays (see note below), it is short:
array1.length === array2...
Windows recursive grep command-line
...|
edited Nov 18 '14 at 20:05
MPelletier
14.7k1212 gold badges7777 silver badges125125 bronze badges
answ...
Using jQuery To Get Size of Viewport
...unction() {
if(typeof $=='undefined') {
alert("PROGRAMMER'S Error: you haven't called JQuery library");
} else if (typeof $.ui=='undefined') {
alert("PROGRAMMER'S Error: you haven't installed the UI Jquery library");
}
if(document.doctype==null || screen.heig...
Build an ASCII chart of the most commonly used words in a given text [closed]
Build an ASCII chart of the most commonly used words in a given text.
59 Answers
59
...
Test if a class has an attribute?
...
Did +1 and then noticed error. It should be .IsDefined(typeof(Type), false);
– Alexander Beletsky
Apr 5 '12 at 13:13
...
How to use Jackson to deserialise an array of objects
...
One extra note, if while parsing you get an error such as JsonMappingException: No suitable constructor found for type then it means you need to added a default constructor to your class adding a private no-arg constructor fixed it for me.
– Synta...
Why doesn't list have safe “get” method like dictionary?
Why doesn't list have a safe "get" method like dictionary?
12 Answers
12
...
Determining the current foreground application from a background task or service
I wish to have one application that runs in the background, which knows when any of the built-in applications (messaging, contacts, etc) is running.
...