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How to create an empty file at the command line in Windows?
...ll cause the
variable used to remain unchanged. As usual with set/p, the string to the
right of the equal sign is displayed as a prompt with no CRLF.
Since here the "string to the right of the equal sign" is empty... the result is an empty file.
The difference with cd. > filename (which...
Why does this Java code compile?
...s test {
int a = a = 1;
int b = b + 1;
public static void Main(String[] args) {
int c = c = 1;
int d = d + 1;
}
}
The declaration of b is invalid and fails with an illegal forward reference error.
The declaration of d is invalid and fails with an variable d might no...
git-diff to ignore ^M
...f, git show, etc.
It appears to leave other settings as-is; for instance, extra spaces at the end of a line still show as errors (highlighted in red) in the diff.
(Other answers have alluded to this, but the above is exactly how to set the setting. To set the setting for only one project, omit th...
SET NOCOUNT ON usage
... not have SET NOCOUNT OFF; and that is why they think they are not getting extra bytes in response. Accurate benchmark would be to use SET NOCOUNT ON in left and SET NOCOUNT OFF in right stored procedure. This way you will get TDS package with DONEINPROC (SET NOCOUNT ...), ten again DONEINPROC (INS...
Examples of GoF Design Patterns in Java's core libraries
...ognizeable by creational methods returning the instance itself)
java.lang.StringBuilder#append() (unsynchronized)
java.lang.StringBuffer#append() (synchronized)
java.nio.ByteBuffer#put() (also on CharBuffer, ShortBuffer, IntBuffer, LongBuffer, FloatBuffer and DoubleBuffer)
javax.swing.GroupLayout.G...
Eclipse RCP开发桌面程序 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...sor extends WorkbenchAdvisor {
2
3 private static final String PERSPECTIVE_ID = " cn.blogjava.youxia.rcp_start.perspective " ;
4
5 public WorkbenchWindowAdvisor createWorkbenchWindowAdvisor(IWorkbenchWindowConfigurer configurer) {
6 return new Applic...
How do PHP sessions work? (not “how are they used?”)
...ssions files is the content of $_SESSION, serialized (ie, represented as a string -- with a function such as serialize) ; and is un-serialized when the file is loaded by PHP, to populate the $_SESSION array.
Sometimes, the session id is not stored in a cookie, but sent in URLs, too -- but that's q...
python pip: force install ignoring dependencies
...hon packaging tools: distutils, setuptools, pip. Setuptools (and pip) has "extras", but they must be explicitly selected and installed by the user.
– shadowtalker
Oct 18 '18 at 19:51
...
Sort hash by key, return hash in Ruby
...hat you're doing isn't right.
If you want it sorted for display, return a string:
"{" + h.sort.map{|k,v| "#{k.inspect}=>#{v.inspect}"}.join(", ") + "}"
or, if you want the keys in order:
h.keys.sort
or, if you want to access the elements in order:
h.sort.map do |key,value|
# keys will a...
How to change href of tag on button click through javascript
...ibute("href", "xyz.php");
return false;
}
</script>
It's one extra line of code but find it better structure-wise.
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