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Navigation bar show/hide
...wo consecutive taps, perhaps with CACurrentMediaTime(). Or test the result from [touch tapCount].
If you get two taps, your subclassed view issues an NSNotification that your view controller has registered to listen for.
When your view controller hears the notification, it fires a selector that eith...
Which cryptographic hash function should I choose?
.... Even though there are no known pre-image attacks to date on MD5 the line from the security experts is that MD5 should not be used where you need to defend against pre-image attacks. SAME goes for SHA1.
Keep in mind, not all algorithms need to defend against pre-image or collision attacks. Take t...
How can I style an Android Switch?
...at defines the different states for the switcher drawable.
Here the copies from the Android sources:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_enabled="false" android:drawable="@drawable/switch_thumb_disabled_holo_light" />
<it...
How to find path of active app.config file?
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Thank you. I had a project upgraded from VS2008 -> VS2013 that refused to read the app.config file. Then I learned via AppDomain.CurrentDomain.SetupInformation.ConfigurationFile that it was searching for XXX.vshost.exe.config which was not being generated . ...
Drop rows with all zeros in pandas data frame
...his question about once a month and always have to dig out the best answer from the comments:
df.loc[(df!=0).any(1)]
Thanks Dan Allan!
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NameError: name 'reduce' is not defined in Python
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You can add
from functools import reduce
before you use the reduce.
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How to empty a list in C#?
...ain it's capacity.
Count is set to 0, and references to other objects from elements of
the collection are also released.
Capacity remains unchanged.
Option #2 - Use Clear() and TrimExcess() functions to set List<T> to initial state.
Count is set to 0, and references to other...
How to get an outline view in sublime texteditor?
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This is awesome and I was really missing outline view from Eclipse. This is honestly much better though I wish there was a way to have it pull up only the main functions and not the callbacks/success functions.
– Michael BW
Mar 12 '12 at 1...
Subscript and Superscript a String in Android
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((TextView)findViewById(R.id.text)).setText(Html.fromHtml("X<sup>2</sup>"));
or
Common Tasks and How to Do Them in Android
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'AND' vs '&&' as operator
...with the same precedence distinction so it wouldn't be sensible to deviate from this standard (however puzzling it might be for beginners) by making precedence equal in PHP. Not to mention the backward compatibility of tons of PHP applications.
– Mladen Jablanović
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