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python pandas remove duplicate columns
...he given example, the returned value would be [False,False,True].
Pandas allows one to index using boolean values whereby it selects only the True values. Since we want to keep the unduplicated columns, we need the above boolean array to be flipped (ie [True, True, False] = ~[False,False,True])
F...
Detect if the app was launched/opened from a push notification
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I am getting the call to application:didReceiveRemoteNotification: after tapping the notification regardless of whether the app is just in the background or not running at all so this answer suits my needs perfectly. Tested on iOS 7 & 8
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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
... offsetY = e.clientY - element.offsetTop; return false; // 防止文本选中 }; // 鼠标移动时拖动元素 document.onmousemove = function(e) { if (!isDragging) return; element.style.left = (e.clientX - offsetX) + 'px'; element.style.top = (e....
Parse usable Street Address, City, State, Zip from a string [closed]
...ase which has been converted to Sql Server 2005. This field has everything all in one field. I need to parse out the individual sections of the address into their appropriate fields in a normalized table. I need to do this for approximately 4,000 records and it needs to be repeatable.
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How to convert a Drawable to a Bitmap?
I would like to set a certain Drawable as the device's wallpaper, but all wallpaper functions accept Bitmap s only. I cannot use WallpaperManager because I'm pre 2.1.
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How to set layout_weight attribute dynamically from code?
...t the value for the attribute layout_weight for button in android dynamically from java code ?
9 Answers
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Set HTTP header for one request
...TP request headers , but from what I can tell, it will set that header for all requests of that method. I have something like this in my code:
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Tool to read and display Java .class versions
...ead the class file signature and get these values without a 3rd party API. All you need to do is read the first 8 bytes.
ClassFile {
u4 magic;
u2 minor_version;
u2 major_version;
For class file version 51.0 (Java 7), the opening bytes are:
CA FE BA BE 00 00 00 33
...where 0xCAFEBAB...
How does free know how much to free?
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This is indeed an implementation detail for the malloc api and there is no api to get this info back in a standard way (to my knowledge). The "system" records it and uses that on free. Maybe the answer is not satisfying you but I do not think you'll get one with more generically ...
How to reduce iOS AVPlayer start delay
Note, for the below question: All assets are local on the device -- no network streaming is taking place. The videos contain audio tracks.
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