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How/When does Execute Shell mark a build as failure in Jenkins?
...ill good reasons to use Jenkins: the audit trail, build status visibility, etc. If you already have a build script, moving it to Jenkins is a good first step before refactoring it to take advantage of Jenkins features.
– aehlke
Nov 26 '14 at 17:52
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When to use IMG vs. CSS background-image?
...for multiple overlay images in IE6.
Use IMG with a z-index in order
to stretch a background image to fill its entire window.Note, this is no longer true with CSS3 background-size; see #6 below.
Using img instead of background-image can dramatically improve performance of animations over a backgroun...
How to create duplicate allowed attributes
... attrbiute overrides TypeId, then accessing it through PropertyDescriptor.GetCustomAttributes() will only return a single instance of your attribute.
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Which is better, return value or out parameter?
...t' parameters create a bit of friction to a lot of APIs, compositionality, etc.
The most noteworthy exception that springs to mind is when you want to return multiple values (.Net Framework doesn't have tuples until 4.0), such as with the TryParse pattern.
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SBT stop run without exiting
... the Task Manager (Windows), or Force Quit or Activity Monitor (Mac OS X), etc.
– Seth Tisue
Mar 21 '11 at 16:45
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How to attach javadoc or sources to jars in libs folder?
... the appropriate folder (java jar file, source jar file, javadoc jar file, etc).
Add the java jar file for each project in the "Libraries" tab for the Java Build Path by clicking on the Add Jars... button to add the jar from the library sub-folder in the "libraries" folder.
Attach the source/javadoc...
htaccess redirect to https://www
... is connecting via HTTPS to a proxy, load balancer, Passenger application, etc., the %{HTTPS} variable may never be on and cause a rewrite loop. This is because your application is actually receiving plain HTTP traffic even though the client and the proxy/load balancer are using HTTPS. In these case...
How do I escape the wildcard/asterisk character in bash?
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Great explanation, thanks! My usecase is SELECT * FROM etc., this is the only way that works.
– knutole
Jul 18 '15 at 15:20
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What is the python “with” statement designed for?
...ort os
@contextmanager
def working_directory(path):
current_dir = os.getcwd()
os.chdir(path)
try:
yield
finally:
os.chdir(current_dir)
with working_directory("data/stuff"):
# do something within data/stuff
# here I am back again in the original working directory...
How does Google's Page Speed lossless image compression work?
...fullest, e.g. PNG8+a instead of PNG24+a, optimized Huffman tables in JPEG, etc.
Photoshop doesn't really try hard to do that when saving images for the web, so it's not surprising that any tool beats it.
See
ImageOptim (lossless) and
ImageAlpha (lossy) for smaller PNG files (high-level descrip...