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Java Garbage Collection Log messages
... after GC, 1Gb max heap size
minor GC occurred 8109.128 seconds since the start of the JVM and took 0.04 seconds
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Mongodb Explain for Aggregation framework
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Starting with MongoDB version 3.0, simply changing the order from
collection.aggregate(...).explain()
to
collection.explain().aggregate(...)
will give you the desired results (documentation here).
For older versions &g...
Vibrate and Sound defaults on notification
...e,You can try it.
protected void displayNotification() {
Log.i("Start", "notification");
// Invoking the default notification service //
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(this);
mBuilder.setAutoCancel(true);
...
How do I loop through a list by twos? [duplicate]
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You can also use this syntax (L[start:stop:step]):
mylist = [1,2,3,4,5,6,7,8,9,10]
for i in mylist[::2]:
print i,
# prints 1 3 5 7 9
for i in mylist[1::2]:
print i,
# prints 2 4 6 8 10
Where the first digit is the starting index (defaults to beg...
Could not reserve enough space for object heap
...
here is how to fix it:
Go to Start->Control Panel->System->Advanced(tab)->Environment Variables->System
Variables->New: Variable name: _JAVA_OPTIONS
Variable value: -Xmx512M
Variable name: Path
Variable value: %PATH%;C:\Program Files\J...
Xcode iOS project only shows “My Mac 64-bit” but not simulator or device
This just started happening that my iOS project is only showing "My Mac 64-bit" rather than the Simulator or my iPhone to build to. I have no idea why this is happening. I do not think that I have changed anything.
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Convert hex string to int in Python
...1, in <module>
NameError: name 'ffff' is not defined
Python numbers start with a numeric character, while Python names cannot start with a numeric character.
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Go to back directory browsing after opening file in vim
...ourceforge
:Explorer: opens the Explorer, same as :E (if not other command starting with E is defined (see stackoverflow), or as :Ex (see vim.wikia) (by @drug_user841417).
:b#: goes back to the "previously edited buffers". See vim.wikia
:e# or Ctrl-6 (or Ctrl-^): goes back to the "previously edited...
Android: how do I check if activity is running?
...{
static boolean active = false;
@Override
public void onStart() {
super.onStart();
active = true;
}
@Override
public void onStop() {
super.onStop();
active = false;
}
}
The only gotcha is that if you use it in two act...
How to have the formatter wrap code with IntelliJ?
...l +Shift + S (for example) that do all this things:
Edit > Macros > Start Macro Recording (the recording will start). Click where you need.
For example:
Code > Reformat Code
Code > Auto-Indent Lines
Code > Optimize Imports
Code > Rearrange Code
File > Save All
... (all that y...