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Concatenate text files with Windows command line, dropping leading lines
... need to concatenate some relatively large text files, and would prefer to do this via the command line. Unfortunately I only have Windows, and cannot install new software.
...
How to simulate a button click using code?
...rits this function, including Button, Spinner, etc.
Just to clarify, View does not have a static performClick() method. You must call performClick() on an instance of View.
For example, you can't just call
View.performClick();
Instead, do something like:
View myView = findViewById(R.id.myview)...
How do I split a string into an array of characters? [duplicate]
...
If you just want to access a string in an array-like fashion, you can do that without split:
var s = "overpopulation";
for (var i = 0; i < s.length; i++) {
console.log(s.charAt(i));
}
You can also access each character with its index using normal array syntax. Note, however, that st...
Unable to load DLL 'SQLite.Interop.dll'
...
How can you add a dependency like that? never done it (VS2013)
– jpgrassi
Sep 2 '15 at 18:15
3
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How to kill a child process after a given timeout in Bash?
...time and with no apparent reason (closed source, so there isn't much I can do about it). As a result, I would like to be able to launch this process for a given amount of time, and kill it if it did not return successfully after a given amount of time.
...
What does a tilde do when it precedes an expression?
... converts its operand to a 32 bit integer (bitwise operators in JavaScript do that)...
0000 0000 0000 0000 0000 0000 0000 0001
If it were a negative number, it'd be stored in 2's complement: invert all bits and add 1.
...and then flips all its bits...
1111 1111 1111 1111 1111 1111 1111 1110
...
How can I undo git reset --hard HEAD~1?
Is it possible to undo the changes caused by the following command? If so, how?
18 Answers
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Removing double quotes from variables in batch file creates problems with CMD environment
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You have an extra double quote at the end, which is adding it back to the end of the string (after removing both quotes from the string).
Input:
set widget="a very useful item"
set widget
set widget=%widget:"=%
set widget
Output:
widget="...
entity object cannot be referenced by multiple instances of IEntityChangeTracker. while adding relat
...rytime I try to save my contact, which is validated I get the exception "ADO.Net Entity Framework An entity object cannot be referenced by multiple instances of IEntityChangeTracker"
...
C# loop - break vs. continue
... (int i = 0; i < 10; i++) {
if (i == 0) {
break;
}
DoSomeThingWith(i);
}
The break will cause the loop to exit on the first iteration - DoSomeThingWith will never be executed. This here:
for (int i = 0; i < 10; i++) {
if(i == 0) {
continue;
}
DoSome...