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How to replace a set of tokens in a Java String?
...late the replacements map ...
StringBuilder builder = new StringBuilder();
int i = 0;
while (matcher.find()) {
String replacement = replacements.get(matcher.group(1));
builder.append(text.substring(i, matcher.start()));
if (replacement == null)
builder.append(matcher.group(0));
...
MYSQL Truncated incorrect DOUBLE value
...e column used in the where clause, despite only having what appeared to be integer values, was actually a varchar(20)
– Robert Gannon
Jul 30 '14 at 13:54
...
C++及Windows异常处理(try，catch; __try,__finally, __except) - C/C++ - ...
..._try,__finally; __try, __except)一道笔试题引起的探究题目：
int* p = 0x00000000; // pointer to NULL
puts( "hello ");
__try{
puts( "in try ");
__try{
puts( "in try ");
*p = 13; // causes a...
How to determine programmatically whether a particular process is 32-bit or 64-bit
...
One of the more interesting ways I've seen is this:
if (IntPtr.Size == 4)
{
// 32-bit
}
else if (IntPtr.Size == 8)
{
// 64-bit
}
else
{
// The future is now!
}
To find out if OTHER processes are running in the 64-bit emulator ...
How do I erase an element from std::vector by index?
...
To delete a single element, you could do:
std::vector<int> vec;
vec.push_back(6);
vec.push_back(-17);
vec.push_back(12);
// Deletes the second element (vec[1])
vec.erase(vec.begin() + 1);
Or, to delete more than one element at once:
// Deletes the second through third el...
Fragments onResume from back stack
...pportFragmentManager();
if (manager != null) {
int backStackEntryCount = manager.getBackStackEntryCount();
if (backStackEntryCount == 0) {
finish();
}
Fragment fragment = manager.getFragments()
...
Why is a C++ Vector called a Vector?
...' for a fixed-length sequence of numbers. C++11 compounds this mistake by introducing a class 'array' that behaves similarly to a mathematical vector.
Alex's lesson: be very careful every time you name something.
share
...
adding multiple entries to a HashMap at once in one statement
...You can use the Double Brace Initialization as shown below:
Map<String, Integer> hashMap = new HashMap<String, Integer>()
{{
put("One", 1);
put("Two", 2);
put("Three", 3);
}};
As a piece of warning, please refer to the thread Efficiency of Java “Double Brace Initializat...
How do I run a batch file from my Java Application?
...how. So I guess either Java or Windows fixed part of the problem at some point. If we try to exec "gradlew", that fails though, so clearly the ".bat" is still needed on the end.
– Trejkaz
Sep 26 '17 at 6:52
...
Loader lock error
...ckMsg break="true"/> </mda:msg> VS then presents multiple breakpoints during the CTOR sequence. Turning off the LoaderLock setting doesn't help. For me, I had to tick the top MDA option (for ALL MDA) then untick the top level option (for no MDA), then build+run. This didn't work for my col...